Updated on 2022/09/21

写真a

 
SANAGI Minoru
 
Organization
Faculty of Natural Science and Technology Associate Professor
Position
Associate Professor
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Degree

  • 工学修士 ( 京都大学 )

  • 博士(工学) ( 京都大学 )

Research Interests

  • マイクロ波

  • microwave

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

Professional Memberships

  • 米国電気電子学会(The Institute of Electrical and Electronic Engineers)

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  • 電子情報通信学会

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Committee Memberships

  • 電子情報通信学会   中国支部学生会顧問  

    2003 - 2005   

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    Committee type:Academic society

    電子情報通信学会

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Papers

  • Efficiency and harmonics generation in microwave to DC conversion circuits of half-wave and full-wave rectifier types Reviewed

    Shohei Imai, Shoichi Tamaru, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2011 - Proceedings   15 - 18   2011

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    A Rectifying Antenna (Rectenna) is one of the most important components for a wireless power transmission. It has been developed for many applications such as Space Solar Power System (SSPS), and Radio Frequency Identification (RFID) etc. The Rectenna consisting of RF-DC conversion circuits and receiving antennas needs to be designed for high conversion efficiency to achieve efficient power transmission. we try to design the mw-Class RF-DC conversion circuit using half-and full-wave rectification. The measured conversion efficiencies is 59.3 % and 65.3 % athalf- and full-wave type, respectively. And the full-wave type has lower 2nd harmonic reflection coefficient. © 2011 IEEE.

    DOI: 10.1109/IMWS.2011.5877081

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  • Injection signal controlled active phased arrays without mode jumps Reviewed

    Minoru Sanagi, Kazuhiro Fujimori, Shigeji Nogi

    ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS   90 ( 4 )   34 - 45   2007

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:SCRIPTA TECHNICA-JOHN WILEY & SONS  

    An examination is made of phased array operation, by injecting signals with different phases into both ends of a coupled microwave oscillator system and controlling that phase, as a system for an active phased array antenna using frequency locking. This system has multiple operating modes, but by causing a slight deviation of only the free-running frequency of the end oscillator from the frequency of the injection signal, mode jumps can be suppressed and the phase difference between the oscillators made large. The effectiveness of this method can be numerically confirmed by finding the conditions for single mode operation with an approximation analysis of the governing equation. Using an active integrated antenna constructed of a patch antenna and serial-feedback FET oscillators, an experiment was performed by scanning the radiation beams of two-, three-, and five-element antenna arrays to demonstrate that the scan range in the radiation direction was extended with single mode operation. (C) 2007 Wiley Periodicals, Inc.

    DOI: 10.1002/ecjb.20293

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  • FDTD Analysis Considered Undesirable Radiation of RF-DC Conversion Circuit for Microwave Power Transmission System Reviewed

    Kazuhiro FUJIMORI, Tatsuya TAKAGAKI, Tsunayuki YAMAMOTO, Minoru SANAGI, Shigeji NOGI

    2006 Korea-Japan Joint Conference on AP/EMCJ/EMT Proceedings   P-AP-29   149 - 152   2006.9

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  • Active phased array antenna radiating second harmonic output wave Reviewed

    M Sanagi, K Yano, K Fujimori, S Nogi

    ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS   89 ( 4 )   39 - 50   2006

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:SCRIPTA TECHNICA-JOHN WILEY & SONS  

    In order to make the scanned radiation beam range wider, phased array operation of an active antenna radiating the second harmonic is studied. By numerical analysis of a coupled oscillator system modeling file active antenna array, it is shown that the variation of the phase difference of the second harmonic component between the oscillators reaches 2 pi when the oscillators are coupled only by the fundamental components. This value is twice that yielding the fundamental component. Through experiments using two- and four-element arrays, the results of the analysis are confirmed. The radiation beam of the second harmonic is successfully scanned in a wider range than that for the fundamental component. (c) 2006 Wiley Periodicals, Inc.

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  • Chain power divider/combiner with microstrip line probes inserted into a rectangular waveguide Reviewed

    M Sanagi, S Ekuni, K Fujimori, S Nogi

    PROCEEDINGS OF THE 2004 CHINA-JAPAN JOINT MEETING ON MICROWAVES   41 - 44   2004

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:HARBIN INSTITUTE TECHNOLOGY PUBLISHERS  

    Multiple-way power divider/combiner's with a rectangular waveguide port for input/output signal and microstrip line ports for output/input signals are presented. A number of dividing/combining units are successively connected in the chain structure. The unit is composed of the rectangular waveguide section with the microstrip-line probe pair and the thin narrow section. Using as the divider, the chain structure has wideband performance due to the traveling-wave opeartion. High isolation between the paired ports in the unit is established by connecting the paired microstrip lines via a chip resistor. The four-way divider/combiner operating at X-band is designed. The broadband characteristics and. high isolations among the furcated ports are confirmed by the prototype divider/combiner.

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  • Spatial Power Combining of Circularly Polarized Active Antennas Reviewed

    Shigeji Nogi, Tomomichi Kagawa, Minoru Sanagi

    IEEE Antennas and Propagation Society International Symposium 1998 Digest   Vol.1,pp.470-473   1998

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  • Phased Array Behavior of Circularly Polarized Active Antennas Reviewed

    Tomomichi Kagawa, Shigeji Nogi, Minoru Sanagi

    1998 Asia-Pacific Microwave Conference Proc.   Vol.2,pp.707-710   1998

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  • Phased-array behavior of a one-dimensional mutually coupled oscillator system controlled by injection signals Reviewed

    T Kagawa, S Nogi, M Sanagi, K Fukui

    ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS   80 ( 2 )   45 - 56   1997.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SCRIPTA TECHNICA-JOHN WILEY & SONS  

    The system configuration, fundamental operation, and PSK modulation of the output wave are discussed for the phased array operation of a mutually coupled one-dimensional oscillator array when signals with different phases are injected at the two ends to make use of the mutual locking and injection locking phenomena. First, the equivalent circuit is analyzed and the condition of phased array operation is derived. It is shown that both the desired mode, appropriate for the phased array operation, and other modes exist. It is demonstrated that injecting the injection signal at the center of the array is effective in enhancing the stability of the desired mode. The transient response of the array is analyzed when a PSK signal is used as the injection signal. A possible means of obtaining a PSK modulated wave as the output is presented. An experiment in the X band, using waveguide oscillators and an active patch antenna array is described. The results are close to the theoretical predictions. (C) 1997 Scripta Technica, Inc.

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  • FDTD analysis for coaxial probe inserted into a waveguide Reviewed

    A Sanada, M Sanagi, S Nogi, K Yamane

    1997 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS, VOLS I-III   3   957 - 960   1997

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:CITY UNIVERSITY HONG KONG  

    Full wave FD-TD analysis has been carried out for coaxial probe inserted into a waveguide so as to achieve coaxial-waveguide transition. Including cases for probes with large diameter and extension length, equivalent admittances agreed well with corresponding measured results and have been provided as useful data for circuit design. Field concentration which ought to be taken into account for high power application design has been also discussed by field distribution.

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    Other Link: http://orcid.org/0000-0003-2642-5296

  • Axially symmetrical Fabry-Perot oscillator with multiple devices inserted in dielectric substrate Reviewed

    M Sanagi, T Itoga, S Nogi

    1997 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS, VOLS I-III   337 - 340   1997

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    Authorship:Lead author   Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:CITY UNIVERSITY HONG KONG  

    We investigate an axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric substrate for power combining of many more devices in microwave and millimeter wave frequency range. Empirically in this oscillator, efficient power combining can be done when it oscillates approximately at the frequency which corresponds to the wavelength equal to twice the spacing between devices. The wavelength in tile dielectric is shorter than in free space, so we tried to insert tile devices in the dielectric substrate in order to increase the number of the devices. By measuring the oscillation frequency of the oscillator with sixteen devices at X-band, we confirmed that the spacing between devices was about a half wavelength in the dielectric. We achieved almost perfect power combining of sixteen devices.

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  • Injection signal controlled active phased array with a frequency shifted end element Reviewed

    S Nogi, M Sanagi, M Sono, F Miyake

    1997 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS, VOLS I-III   953 - 956   1997

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:CITY UNIVERSITY HONG KONG  

    In order to realize useful active phased array antennas, we have investigated the phased array behavior of a microwave coupled oscillator system which has locking sources at both ends and is controlled by the phases of the injection signals. By numerical analysis, we show that free-running frequency shift of the end oscillator of the array is effective for enlarging the scanning range of the radiated beam. An experiment on a system of waveguide type oscillators has confirmed the analytical result and rye have successfully scanned the wave radiated from an array with five active patch antennas mounted with Gunn diodes.

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  • Transmission line coupled active microstrip antennas for phased arrays Reviewed

    R Ispir, S Nogi, M Sanagi, K Fukui

    1996 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3   931 - 934   1996

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  • Axially symmetric fabry-perot power combiner with active devices mounted on both the mirrors Reviewed

    M Sanagi, E Yamamoto, S Nogi

    1996 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3   1259 - 1262   1996

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Books

  • 「光波利用センシング」成果報告書 : 6章3・4 光ICセンサによる電界分布の計測(共著)

    ( Role: Joint author)

    オーム社  1990 

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    Responsible for pages:ReaD移行データ日付 : 1990   Language:Japanese

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MISC

  • A Compact Waveguide Power Divider Mechanical-Controlling Dividing Ratio "jointly worked" Reviewed

    Minoru Sanagi, Munehiro Koji, Shigeji Nogi, Ken-ichi Hamamoto, Naoki Niwa, and, Kenji Takagi

    IEICE Transactions on Electronics (Japanese Edition)   J95-C ( 6 )   109 - 116   2012

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  • Measurement of Scattering Parameters of Devices with Waveguide Ports and Coaxial Line Ports Using Unknown "Thru" Calibration "jointly worked" Reviewed

    Minoru Sanagi, Kazuhiro Fujimori, Shigeji Nogi

    IEICE Transactions on Electronics (Japanese Edition)   J94-C ( 12 )   487 - 495   2011.12

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    Authorship:Lead author   Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

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  • C-2-4 Efficient Balanced Doubler with a Balun

    Sanagi Minoru, Aimi Takayuki, Fuzimori Kajuhiro, Nogi Sigeji

    Proceedings of the Society Conference of IEICE   2011 ( 1 )   28 - 28   2011.8

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

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  • C-2-65 Equivalent Circuit for a Coaxial Probe Pair Inserted into a Rectangular Waveguide

    Sanagi Minoru, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the IEICE General Conference   2011 ( 1 )   103 - 103   2011.2

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  • Measurement of Scattering Parameters of Devices with Waveguide Ports and Coaxial Line Ports Using Unknown "Thru" Calibration

    SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report   110 ( 343 )   23 - 28   2010.12

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Measurements of scattering parameters of devices with rectangular waveguide ports and coaxial line ports have been investigated. Unknown "thru" calibration was employed for characterizing a transition for converting the coaxial line test port to the waveguide. Transmission phase of the unknown "thru" must be known to within ±90° in the calibration procedure. A transition from the coaxial line to the waveguide used as the unknown "thru" was designed with an electromagnetic field simulator, and simulated values of the transmission phase was adopted as the required known values. The scattering parameters of a waveguide section with a coaxial probe were measured with a fabricated unknown "thru."

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  • RF to DC Conversion for Wireless Power Transmission

    NOGI Shigeji, FUJIMORI Kazuhiro, SANAGI Minoru

    The IEICE transactions on electronics C   93 ( 12 )   540 - 548   2010.12

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  • Design of Highly Efficient and Compact RF-DC Conversion Circuit at mW-class by LE-FDTD Method Reviewed

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    IEICE TRANSACTIONS ON ELECTRONICS   E93C ( 8 )   1323 - 1332   2010.8

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    Language:English   Publisher:IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG  

    A rectifying antenna is one of the most important components for wireless power transmission applications. In our previous papers, some RF-DC conversion circuits with high conversion efficiency at low input power are proposed. However, these RF-DC conversion circuits have some parts of which size depends on operating frequency, so the circuit size becomes large at low operating frequency. And, the composition of these RF-DC conversion circuits is complicated. Therefore, in this paper, a new RF-DC conversion circuit composed of only chip devices is proposed. This circuit has higher conversion efficiency than the previously proposed circuits. And, size reduction of the RF-DC conversion circuit is realized. Moreover, the composition of the circuit is simple, so the circuit size does not depend on operating frequency. For design of the RF-DC conversion circuits, LE-FDTD method is used. The measurement results agree with analytical results of the LE-FDTD method very well, and availability of the LE-FDTD method is discovered. It is shown that LE-FDTD method is a powerful analytical way which can give efficient design of RF-DC conversion circuit with high conversion efficiency.

    DOI: 10.1587/transele.E93.C.1323

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  • A Waveguide Power Divider Mechanical-Controlling Dividing Ratio With Low Insertion Loss

    SANAGI Minoru, KOJI Munehiro, NOGI Shigeji, HAMAMOTO Ken-ichi, NIWA Naoki, TAKAGI Kenji

    IEICE technical report   110 ( 25 )   59 - 64   2010.5

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Loss reduction of a power divider mechanical-controlling dividing ratio has been investigated. The divider consists of a rectangular waveguide section with a coaxial probe in order to deliver microwave power from the waveguide to the coaxial line, and three rotary fins and one metal rod are incorporated for mechanical-control of the dividing ratio. High power experiments and electromagnetic field simulations revealed to be that the cause of high insertion loss of the divider is the conductor loss by large current flowing on surfaces of the fin edges and the H plane waveguide walls facing each other. The rotary fins with the shape of character "H" are employed for reduction of the large current. It was confirmed that the power insertion loss ratio of the prototype divider is less than 6.5%.

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  • C-2-93 Loss Reduction of Waveguide Power Divider Mechanical-Controlling Dividing Ratio

    KOJI Munehiro, SANAGI Minoru, NOGI Shigeji, HAMAMOTO Ken-ichi, NIWA Naoki, TAKAGI Kenji

    Proceedings of the IEICE General Conference   2010 ( 1 )   136 - 136   2010.3

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  • C-2-94 Perfectly Matched Waveguide Power Dividing Switches for a Microwave Power Distribution System in Buildings

    MATSUNOHANA Kota, SANAGI Minoru, NOGI Shigeji, NIWA Naoki

    Proceedings of the IEICE General Conference   2010 ( 1 )   137 - 137   2010.3

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  • An important relation for determining a high-efficiency RF DC Conversion Circuit

    Shohei Imai, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2010 ASIA-PACIFIC MICROWAVE CONFERENCE   2319 - 2322   2010

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    For designing a high-efficiency RF DC conversion circuit, simulations and trial and error usually occupy a large part of the work. Such design method needs much time. The important part of design is to design an input circuit. The efficiency of a conversion circuit mainly depends on input circuit. However, it is difficult to design the input circuits. This study takes notice of the voltage when the DC load resistance is open. The open DC load voltage is an important quantity for design of the high-efficiency RF DC conversion circuit. We show by experiments and simulations that the efficiency of an RF DC conversion circuit tends to increase with the open DC load voltage. This relation can make it easier to design RF DC conversion circuit.

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  • C-2-120 Network Analyzer Calibration for Measurement of Devices with Coaxial Ports and Waveguide Ports

    SANAGI Minoru, YOSHIOKA Hideharu, KOJI Munehiro, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the IEICE General Conference   163 - 163   2010

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  • C-2-94 Waveguide Power Dividing Switches With Low Return Loss for a Microwave Power Distribution System in Buildings

    MATSUNOHANA Kota, SANAGI Minoru, NOGI Shigeji, NIWA Naoki

    Proceedings of the Society Conference of IEICE   2009 ( 1 )   122 - 122   2009.9

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  • A Waveguide Power Divider Mechanical-Controlling Dividing Ratio for Microwave Power Distribution System in Buildings

    SANAGI Minoru, KOJI Munehiro, HAMASHIMA Hiroshi, NOGI Shigeji, HAMAMOTO Kenichi, NIWA Naoki, TAKAGI Kenji, SHINOHARA Naoki, MITANI Tomohiko

    IEICE technical report   109 ( 62 )   1 - 6   2009.5

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    A power divider mechanical-controlling dividing ratio for the microwave power distribution system in buildings has been investigated. The divider consists of a rectangular waveguide section with a coaxial probe in order to deliver microwave power from the waveguide to the coaxial line, and three rotary fins and one metal rod are incorporated for mechanical-control of the dividing ratio. The divider with the range of the delivered power ratio to the coaxial line from 1.6% to 67.6% under less than -24.6dB return loss was designed by electromagnetic field simulations. By experiments of a prototype power divider based on the design, the capability of controlling the dividing ratio was confirmed.

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  • C-2-83 Output Coupling from a Waveguide Power Divider to a Trapezoidal Waveguide Without Coaxial Adapters

    SANAGI Minoru, MATSUNOHANA Kota, NOGI Shigeji, HAMAMOTO Ken-ichi, UJIGAWA Satoshi, NIWA Naoki, TAKAGI Kenji, MITANI Tomohiko, SHINOHARA Naoki

    Proceedings of the IEICE General Conference   2009 ( 1 )   122 - 122   2009.3

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  • C-2-33 Inverse Class-C Frequency Doublers Based Upon a Finite Number of Harmonics

    KISHIDA Takehiro, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the IEICE General Conference   2009 ( 1 )   72 - 72   2009.3

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  • C-2-39 Design of Broadband Cylindrical Multiple-Port Power Divider/Combiner Independent on the Number of Branch Ports

    Kamata Hiroyuki, Sanagi Minoru, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the IEICE General Conference   2009 ( 1 )   78 - 78   2009.3

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  • The Design of mW-Class Compact Size Rectenna using Sharp Directional Antenna

    Yasuo Hiramatsu, Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2009 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3   1243 - 1246   2009

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    This paper proposes the compact size rectenna using the open ended diamond antenna which is radiation pattern of sharp. This antenna which is fabricated at the planer has same dimension as the patch antenna. In addition,this antenna's half beamwidth is more narrow than the patch antenna. To realize the compact size rectenna,the dimension of the rectification circuit is smaller than the antenna. So the rectification circuit is constructed of the chip device has the 59.5% of conversion efficiency and the dimension of this circuit has 10mm x 10mm at 5.8GHz. The rectenna array which is composed of 2 elements is fabricated, and confirm operating. As a result the output voltage is 117mV at 0.6m, and 69mV at 1.0m.

    DOI: 10.1109/EUMC.2009.5295939

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  • A Metamaterial Mirror with Multiple CRLH Transmission Lines and its Imaging Quality

    Takuya Tsukagoshi, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2009 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3   201 - +   2009

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    One-dimensional CRLH transmission lines are aligned to construct two-dimensional medium with imaging capability not found in homogeneous materials. Mimicking electromagnetic field distribution on a surface of the perfect lens, high resolution imaging is demonstrated. Unlike transmission configurations such as in a lens, the imaging operation proposed in this paper is not disturbed by dissipation or index mismatch, leading to wide band operations.

    DOI: 10.1109/EUMC.2009.5296485

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  • Development of Ultrasonic Wireless Power Transmission System for Implantable Electronic Devices

    Yusuke Shigeta, Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi, Takuya Tsukagoshi

    EUWIT: 2009 EUROPEAN WIRELESS TECHNOLOGY CONFERENCE   49 - +   2009

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    In recent years, the development of the in-vivo medical devices are remarkable. Generally, in-vivo devices need the internal battery. The life of internal battery is limited, and the maintenance of the battery is necessary.
    For overcoming this problem, the ultrasonic wireless power transmission technology is studied. In the past reports, the transducer of ultrasonic wireless power transmission system is not designed for electrical matching with input source, amplifier circuit, and rectification circuit, etc.
    In this paper, we propose the efficient ultrasonic wireless power transmission system. For realizing the efficient system, the impedance matching between the input source, amplifier circuit and the ultrasonic transducer is considered. And the optimum position of two transducers necessary for achieving a high transmission efficiency is searched. Moreover, the voltage booster circuit to obtain the high DC oputput voltage is designed. In the transmission experiment, it is confirmed that the high DC output voltage for the operation of the in-vivo devices is achieved.

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  • Efficient Antenna Miniaturization Technique by Cut Off of Chromosome-Length in Genetic Algorithm

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi, Takuya Tsukagoshi

    APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5   1837 - +   2009

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    Recently, various wireless applications have hugely become popular. Especially, mobile terminals such as mobile phones are actively developed. In developments of mobile terminals, miniaturization and frequency multiband of antennas are very important issues. However, there are no rational design strategy in small antenna designs. So, antenna developments depends on electromagnetic simulators or capability of engineer. And many cut-and-try processes are necessary for achieving desired characteristic. This makes many problems such as prolongation of developments. Then, now, automatic design techniques of antenna using genetic algorithm (GA) are paid attention.
    In this paper, the new design strategy for miniaturization of antennas is proposed by operation of chromosome-length in GA. Proposed design technique provides a minimum area necessary for keeping characteristics of a antenna. And, efficient miniaturization of a antenna and removing many undesirable conductors in a design ares are possible. Removing undesirable conductors provides lower-cost designing of antennas. The new design method can become rational design strategy for antennas miniaturization.

    DOI: 10.1109/APMC.2009.5384162

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  • Cylindrical Multiple-Port Power Divider/Combiner with Broadband Coaxial-Conical-Radial Line Transtion

    KAMATA Hiroyuki, SANAGI Mioru, FUJIMORI Kazuhiro, NOGI Sigeji

    IEICE technical report   108 ( 350 )   91 - 96   2008.12

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    Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    Cylindrical power divider/combiner's with broadband coaxial-conical-radial line transition have been studied, which have broadband and low loss characteristics required for the power dividing-combining systems in order to realize microwave high power solid-state amplifiers. The power divider/combiner's is composed of the coaxial-conical-radial line transition as the central part, and the peripheral part in which the coaxial probes are line. In the transition, the coaxial line is converted via two sections of the conical lines to the radial line. The characteristic impedance of the radial line has an imaginary part, and so that the conical line of the second stage is used as a matching line such as the quarter-wavelength transformer. Therefore, the transition can be designed which have lower return loss in the wide frequency range. The validity of the design procedure was confirmed with the experiments for the prototype twelve-way dividers.

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  • C-2-57 Broadband 12-way Power Divider/Combiner Using Radial Line with Low Height

    Kamata Hiroyuki, Sanagi Minoru, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2008 ( 1 )   82 - 82   2008.9

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  • C-2-20 PRINCIPLE of High Efficiency Miltiplier OF INVERSE CLASS C at Large Input Voltage

    KISHIDA Takehiro, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2008 ( 1 )   45 - 45   2008.9

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  • C-2-5 Second Harmonic Oscillator with Active Device near the Upper Limit of Working Frequency Range

    SANAGI Minoru, Han Longmei, KISHIDA Takehiro, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2008 ( 1 )   30 - 30   2008.9

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  • Inverse Class-C Operation for Efficient Frequency Doublers

    KISHIDA Takehiro, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report   108 ( 195 )   113 - 118   2008.8

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    Inverse class-C frequency doubling operation has been discussed for frequency doublers and second harmonic oscillators with high output power and high efficiency. It was demonstrated that high second harmonic output power can be obtained with high drain efficiency higher than 60% when the load whose impedance is infinity at all odd harmonicfrequencies including fundamental frequency and the same resistance at all even harmonic frequencies is used by inverse class-C operation. the drain efficiency higher than 80% can be achieved by the larger input power.

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  • C-2-31 PRINCIPLE OF INVERSE CLASS C

    KISHIDA Takehiro, Sanagi Minoru, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the IEICE General Conference   2008 ( 1 )   64 - 64   2008.3

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  • C-2-15 THIRD HARMONIC OSCILLATOR FOR HIGH POWER AND EFFICIENCY

    Nawata Hidekazu, Sanagi Minoru, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the IEICE General Conference   2008 ( 1 )   48 - 48   2008.3

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  • C-2-53 Characteristics of a Variable Power Divider for Microwave Power Distribution Systems in Buildings

    HAMASHIMA Hiroshi, SANAGI Minoru, NOGI Shigeji, HAMAMOTO Ken-ichi, NIWA Naoki, TAKAGI Kenji, SHINOHARA Naoki, MITANI Tomohiko

    Proceedings of the IEICE General Conference   2008 ( 1 )   86 - 86   2008.3

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  • Controlling Phase Responses with Pseudoperiodic Metamaterials based on Composite Right-Left Handed Transmission Lines

    Takuya Tsukagoshi, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2008 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3   1167 - +   2008

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    Transmission line metamaterials based on composite right-left handed (CRLH) structures with pseudoperiodicity are proposed and analyzed experimentally. These metamaterials can be used in various microwave circuits to control not only amplitude but also phase responses of electromagnetic waves. Introducing some kinds of pseudoperiodicity can control phase responses of reflected waves, without affecting severely on electromagnetic bandgap (EBG) properties of periodic structures. Equivalent circuit approaches including distributed line sections are used to design non-periodic structures, resulting in an efficient design procedure. Pseudoperiodic design is also useful for homogenization of conventional metamaterials.

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  • Design of RF-DC Conversion Circuit Composed of Chip Devices

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    APMC: 2008 ASIA PACIFIC MICROWAVE CONFERENCE (APMC 2008), VOLS 1-5   1786 - 1789   2008

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    DOI: 10.1109/APMC.2008.4958300

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  • Dispersionless Phase Responses of Pseudoperiodic Metamaterials based on CRLH Transmission Lines

    Takuya Tsukagoshi, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    APMC: 2008 ASIA PACIFIC MICROWAVE CONFERENCE (APMC 2008), VOLS 1-5   3220 - 3223   2008

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  • The Fundamental Design Approach of The RF-DC Conversion Circuit for Optimizing Its Characteristics

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2008 EUROPEAN MICROWAVE INTEGRATED CIRCUITS CONFERENCE (EUMIC)   370 - 373   2008

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    A Rectifying Antenna (Rectenna) is one of the most important components for a wireless power transmission. It has been developed for many applications such as Space Solar Power System (SSPS), Radio Frequency IDentification (RF-ID), and electric vehicle etc. The Rectenna consisting of RF-DC conversion circuits and receiving antennas needs to be designed for high conversion efficiency to achieve efficient power transmission. In this paper, we investigated the RF-DC conversion circuits by the theoretical analysis. And, we propose the theoretical formula for calculating the output DC voltage in giving the input voltage. The result that is calculated by the formula agreed with the simulator's result, so, we confirmed the validity of the formula we derived. The theory and the formula we derived are useful in order to know the basic operation of the RF-DC conversion circuit, and to design the circuit efficiently.

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  • An efficient LE-FDTD method for the analysis of the active integrated circuit and antenna mounted non-linear devices Reviewed

    Kazuhiro Fujimori, Naoto Kawashima, Minoru Sanagi, Shigeji Nogi

    IEICE TRANSACTIONS ON ELECTRONICS   E90C ( 9 )   1776 - 1783   2007.9

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    The trend of microwave circuits has been toward highly integrated systems. Most design tools for designing microwave circuits mounted the linear or the nonlinear devices adopt the fundamental circuit theory using the S matrix on the frequency domain. The harmonic balance method is also used to correspond to the nonlinear circuit. Therefore, the effect of the electromagnetic field, for example, a mutual coupling between sub-circuits through the, space is almost disregarded. To calculate these circuits included its surrounding electromagnetic field, the finite difference time domain method combined with the equivalent circuit simulation had been presented as the lumped element FDTD (LE-FDTD) method. In general, even if an analytical target is a linear circuit, the FDTD method requires very long analytical time. In this paper, we propose an efficient LE-FDTD method to reduce the analytical time. We investigate its efficiency to compare with the conventional LE-FDTD method or measurements, consequently, it is confirmed that the proposal method requires only at analytical time of 1/10 compared with the conventional method. We also show that the proposal method is able to analyze characteristics of the active integrated antenna (AIA) which are practicably impossible to analyze by using the conventional method.

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  • B-1-147 The Examination of the correction of the Phase Error which Arises in Devices on the LE-FDTD Method

    Yamamoto Tsunayuki, Fujimori Kazuhiro, Sanagi Minoru, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2007 ( 1 )   147 - 147   2007.8

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  • C-2-51 Design of a Waveguide Power Divider Mechanical-Controlling Dividing Ratio

    SANAGI Minoru, HAMASHIMA Hiroshi, NOGI Shigeji, HAMAMOTO Ken-ichi, NIWA Naoki, TAKAGI Kenji, SHINOHARA Naoki, MITANI Tomohiko

    Proceedings of the Society Conference of IEICE   2007 ( 1 )   73 - 73   2007.8

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  • 41617 Microwave Wireless Ubiquitous Power Distribution with Building Structure : Part 4

    HAMAMOTO Kenniti, NIWA Naoki, TAKAGI Kenji, SANAGI Minoru, NOGI Shigeji, SHINOHARA Naoki, MITANI Tomohiko

    Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services   2007   1257 - 1258   2007.7

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  • Input and Output Circuits of an FET for Efficient Generation of Second Harmonic Outputs

    KISHIDA Takehiro, SANAGI Minoru, TAKAHASHI Shingo, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report   107 ( 49 )   49 - 54   2007.5

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    In the second harmonic generation with FETs, optimum configuration of input circuits connected to the gate terminal and output circuits connected to the drain terminal have been investigated. Circuit simulations and experiments of frequency doublers revealed that the input circuits which are conjugately matched with the gate terminal or the fundamental component and has an appropriate reactance at the second harmonic frequency, and the output circuit with the fundamental reactive termination for the inverse class-C operation are required for efficient frequency doubling. By applying the optimum input and output circuits to the single ended second harmonic oscillators, output powers of higher than 20mW and drain efficiencies of higher than 20% were obtained in both cases of the fundamental oscillation frequency of 4GHz and 6GHz.

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  • B-1-172 The Effect of Received Power of Rectifier Circuit in Rectenna on Conversion Efficiency

    Yamamoto Tsunayuki, Takagaki Tatsuya, Fujimori Kazuhiro, Sanagi Minoru, Nogi Shigeji

    Proceedings of the IEICE General Conference   2007 ( 1 )   172 - 172   2007.3

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  • B-1-139 A Planar Notch Array Antenna with Omni-directional Radiation Pattern in Horizontal Plane

    FUJIMORI Kazuhiro, KAWASHIMA Kei, SANAGI Minoru, NOGI Shigeji, ARAI Hiroyuki

    Proceedings of the IEICE General Conference   2007 ( 1 )   139 - 139   2007.3

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  • The design of mw-class RF-DC conversion circuit using the full-wave rectification

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    2007 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-4   905 - 908   2007

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    A Rectifying Antenna (Rectenna) is one of the most important components for a wireless power transmission. It has been developed for many applications such as Space Solar Power System (SSPS), and Radio Frequency Identification (RFID) etc. The Rectenna consisting of RF-DC conversion circuits and receiving antennas needs to be designed for high conversion efficiency to achieve efficient power transmission. In this paper, we try to design the mw-Class RF-DC conversion circuit using full-wave rectification.

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  • The mW-class High Efficient RF-DC Conversion Circuit Using the Resonance Structure

    Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    Proc. 2007 Int. Symp. Antennas Propag.   660 - 663   2007

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  • B-1-145 Efficiency Design Approach of RF-DC Conversion Circuits by Extended FDTD Analysis

    Takagaki Tatsuya, Yamamoto Tsunayuki, Fujimori Kazuhiro, Sanagi Minoru, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2006 ( 1 )   145 - 145   2006.9

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  • C-2-29 Improvement of Conversion Efficiency for Harmonic Mixer by Reactive Termination for Local Oscillator Signal

    Sanagi Minoru, Sudo Hiroyuki, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2006 ( 1 )   48 - 48   2006.9

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  • C-2-21 Voltage Controlled Second Harmonic Oscillator with High Drain Efficiency

    TAKAHASHI Shingo, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2006 ( 1 )   40 - 40   2006.9

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  • B-1-148 A Modeling of FET Oscillator using 4-port Equivalent Circuit

    KAWASHIMA Naoto, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2006 ( 1 )   148 - 148   2006.9

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  • A study of input networks to gate in second harmonic FET oscillators

    TAKAHASHI Shingo, SANAGI Minoru, NEISHI Nobuaki, NAKANE Takafumi, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report   106 ( 48 )   1 - 5   2006.5

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    In order to obtain high output power in higher frequency range such as millimeter wave, an input gate network for second harmonic FET oscillators has been investigated. In the frequency doubler, by using the input network which matches the gate terminal to signal source impedance for fundamental component and has pure reactance at both second and third harmonic frequencies, considerably high output power of second harmonic component was obtained compared with the case using a simple 50Ω line as an input network. The same input network was implemented with the second harmonic oscillator with the fundamental oscillation frequency of 4GHz, and high output power of second harmonic was obtained as 26mW.

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  • CBS-1-3 Improvement in Conversion Efficiency of a Rectenna Circuit by considering Harmonics

    TAKAGAKI Tatsuya, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    Proceedings of the IEICE General Conference   2006 ( 1 )   "S - 5"-"S-6"   2006.3

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  • B-1-37 A Consideration on The Extended FDTD Method Introduced S-Parameters by The Voltage-Source Approach

    SHIRAISHI Tatsuya, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    Proceedings of the IEICE General Conference   2006 ( 1 )   37 - 37   2006.3

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  • B-1-67 Characteristics Analysis of Active Integrated Antenna with Amplifier by The Extended FDTD Method

    KAWASHIMA Naoto, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    Proceedings of the IEICE General Conference   2006 ( 1 )   67 - 67   2006.3

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  • Efficient Design Approach of RF-DC Conversion Circuit Including Undesirable Radiation

    Tatsuya Takagaki, Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    Proc. 2006 Int. Symp. Antennas Propag.   1 - 4   2006

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  • A novel extended FDTD method for the analysis of the active integrated circuit and antenna mounted non-linear devices

    Naoto Kawashima, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    Asia-Pacific Microwave Conference Proceedings, APMC   2   953 - 956   2006

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    The trend of microwave circuits has been toward highly integrated systems. Most design tools for circuits are based on the fundamental circuit theory using the S matrix combined with the harmonic-balance method. Consequently, the electromagnetic effect is ignored or approximated at best. Therefore, the extended finite-difference time-domain(FDTD) method combined with the equivalent circuit simulation had been presented. However, it takes very long times to analyze any circuits. In this paper, we propose a novel extended FDTD method to reduce calculation resources. We investigate its efficiency to compare with the conventional extended FDTD method or measurements, consequently, it is confirmed that the proposal method is required calculation resources less than 10% compared with the conventional method. We also show that the proposal method is able to analyze characteristics of the active integrated antenna(AIA) which are practicably impossible to analyze by using the conventional method. Copyright 2006 IEICE.

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  • 注入信号制御型能動フェイズドアレーの動作モードの単一化 Reviewed

    佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会論文誌(C)   2006

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  • 電圧制御能動集積パッチアンテナの発振モードの単一化 Reviewed

    佐薙稔, 平田務, 藤森和博, 野木茂次

    電子情報通信学会論文誌(C)   2006

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  • Efficient design approach of mW-class RF-DC conversion rectenna circuits by FDTD analysis

    Tatsuya Takagaki, Tsunayuki Yamamoto, Kazuhiro Fujimori, Minoru Sanagi, Shigeji Nogi

    Asia-Pacific Microwave Conference Proceedings, APMC   3   1945 - 1948   2006

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    A Rectenna is one of the most important components for a wireless power transmission. It has been developed for many applications such as Space Solar Power System (SSPS), and RFID etc. The rectenna consisting of RF-DC conversion circuits and receiving antennas needs to be designed for high conversion efficiency to achieve efficient power transmission. In this paper, the extended FDTD method is proposed as a method for calculating the RF-DC conversion circuit, and the availability of this method is confirmed. Furthermore, the output power from the circuit including the radiation power is investigated. Copyright 2006 IEICE.

    DOI: 10.1109/APMC.2006.4429790

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  • An active integrated antenna mixer with RF-IF high conversion efficiency

    TAKASHINA Yusuke, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report   105 ( 486 )   13 - 18   2005.12

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    In order to realize more miniaturized wireless terminals with multi-function, an active integrated antenna which receives RF signal and down-converts it into IF signal has been investigated. The active antenna consists of a patch antenna and a feedback oscillator operating as a self-oscillating harmonic mixer where the IF is equal to difference between the RF and double of local oscillating (LO) frequency. Characteristics of a used FET were measured so that optimum LO input signal level to the gate and optimum feedback factor in local oscillation with maximum RF-IF conversion efficiency were obtained. By experiments of the self-oscillating mixer with the optimum feedback factor, the maximum conversion efficiency was obtained. In the active integrated antenna with the optimum mixer, high RF-IF conversion efficiency of -0.8dB was achieved.

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  • 誘電体内に素子を装荷した軸対称型ファブリペロー多素子発振器 Reviewed

    佐薙稔, 沖哲也, 中西信人, 藤森和博, 野木茂次

    電子情報通信学会論文誌(C)   J88-C ( 12 )   2005.12

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  • B-1-111 A Consideration on Effective Analysis for Microwave Circuit mounted Non-Linear Device by FDTD Method

    FUJIMORI Kazuhiro, KAWASHIMA Naoto, SANAGI Minoru, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2005 ( 1 )   111 - 111   2005.9

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  • Active Integrated Antenna Techniques for Beam Control(Active Circuits & Antenna, <Special Section>Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)

    NOGI Shigeji, SANAGI Minoru, FUJIMORI Kazuhiro

    IEICE transactions on electronics   88 ( 7 )   1358 - 1367   2005.7

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    Active integrated antenna techniques have high potential for giving smaller size, lighter weight, lower cost and higher efficiency, in particular to millimeter-wave circuit-antenna systems. This paper gives a review of active integrated antenna techniques with emphasis on beam steering and retrodirective antenna arrays. Various beam steering operations of integrated antenna oscillator arrays using locking phenomena are presented. Beam steering arrays of such type have the feature that phase shifters are not necessary in the arrays. Arrays with higher harmonic output radiation can enlarge the beam steering range. Arrays of locked active antennas which operate as self-oscillating mixers can be beam controllable receiving antennas.

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  • Active integrated antenna techniques for beam control

    S Nogi, M Sanagi, K Fujimori

    IEICE TRANSACTIONS ON ELECTRONICS   E88C ( 7 )   1358 - 1367   2005.7

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    Active integrated antenna techniques have high potential for giving smaller size, lighter weight, lower cost and higher efficiency, in particular to millimeter-wave circuit-antenna systems. This paper gives a review of active integrated antenna techniques with emphasis on beam steering and retrodirective antenna arrays. Various beam steering operations of integrated antenna oscillator arrays using locking phenomena are presented. Beam steering arrays of such type have the feature that phase shifters are not necessary in the arrays. Arrays with higher harmonic output radiation can enlarge the beam steering range. Arrays of locked active antennas which operate as self-oscillating mixers can be beam controllable receiving antennas.

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  • Beam control in unilaterally coupled active antennas with self-oscillating harmonic mixers Reviewed

    M Sanagi, J Fujiwara, K Fujimori, S Nogi

    IEICE TRANSACTIONS ON ELECTRONICS   E88C ( 7 )   1375 - 1381   2005.7

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    Beam control using active antenna arrays with selfoscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The mixer has two ports for local oscillating (LO) signal. One is an output port extracting the LO signal. The other is an input port for an injection signal to synchronize the local oscillation. The mixers can be coupled unilaterally without other nonreciprocal components by connecting the output port to the input port in the next mixer. In the unilaterally coupled array, the phase differences of the LO signals between the adjacent mixers can be varied without phase shifters in injection locking state by changing the local free-running frequencies of the self-oscillating mixers. The receiving pattern can be controlled by combining the IF signals from the individual active antennas, which have phases associated with the LO signals. The IF is difference between the RF and double of the LO frequency so that arbitrary phase differences from 0 to 2 pi radian can be provided to the output IF signals. The experiments using the two- and three-element arrays demonstrated beam control capability.

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  • Second Harmonic Oscillator with Optimum Fundamental Load

    NAKANE Takafumi, SANAGI Minoru, TAKAHASHI Shingo, KAMEI Ryu, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report. Microwaves   105 ( 60 )   43 - 48   2005.5

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    In order to obtain high output power in higher frequency range such as millimeter wave, optimum fundamental load impedance for second harmonic oscillator has been investigated. First, fundamental load reactance of frequency doublers for maximum second harmonic output power was obtained by an approximated equivalent model for the used FET and experiments of the fabricated doublers. When the second harmonic oscillator with fundamental oscillation frequency of 6GHz had the fundamental load impedance whose the imaginary part was nearly equal to the value for the frequency doubler with the same FET, second harmonic output power and drain efficiency were obtained as 27mW and 26%, respectively.

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  • Rectangular Waveguide Chain Power Divider/Combiner with Isolated Microstrip Line Probe Pairs

    TANAKA Keisuke, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report. Microwaves   105 ( 60 )   37 - 42   2005.5

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    The rectangular waveguide chain power divider/combiner with microstrip line probe pairs has been presented. The divider/combiner is composed by connecting successively dividing/combining units each of which consists of microstrip line probes inserted into a rectangular waveguide and a thin narrow waveguide section and has broadband performance. High isolation between the paired branch ports in the unit can be obtained with coupling of the paired microstrip lines via a chip resistor. The experiments at X-band showed wideband dividing characteristics and high isolation among the furcated ports of the prototype four-way divider/combiner.

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  • C-2-55 Rectangular Waveguide Chain Power Divider/Combiner with Microstrip Line Probes

    TANAKA Keisuke, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the IEICE General Conference   2005 ( 1 )   88 - 88   2005.3

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  • C-2-130 Phased array behavior of 4 element transmission line coupled circularly polarized active antenna reducing spatial coupling

    Kagawa Tomomichi, Ochi Daisuke, Nogi Sigeji, Sanagi Minoru, Imai Nobuaki, Satoh Shinichi

    Proceedings of the IEICE General Conference   2005 ( 1 )   163 - 163   2005.3

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  • C-2-54 Broadband Multiple-Port Power Divider Using Radial Line with Low Height

    EKUNI Suminori, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Shigeji

    Proceedings of the IEICE General Conference   2005 ( 1 )   87 - 87   2005.3

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  • Development of high efficiency rectification circuit for mW-class rectenna

    Kazuhiro Fujimori, Kazuya Tada, Yusuke Ueda, Minoru Sanagi, Shigeji Nogi

    35th European Microwave Conference, Vols 1-3, Conference Proceedings   1355 - 1358   2005

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    For applications of the microwave power transmission technology, it is necessary to realize high efficiency rectennas or rectification circuits. Especially, RF-ID's or ubiquitous power sources demand high RF-DC conversion efficiency for below, mW microwave inputs. However, almost all past rectennas or rectification circuits were designed for over 100 mW rectifying and the RF-DC conversion efficiencies were less than 20% at 1mW microwave input. In this paper, we investigate rectification circuits for developing mW-class rectennas. Discussing diode mount structures in order to increase the efficiency below 10 mW microwave input, we succeeded in developing a rectification circuit whose efficiency is 62.8% for a 10 mW microwave input. We also find that approximately 30% of the input microwave power is consumed by the diode in the rectification circuit.

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  • C-2-16 Oscillator with Fundamental Load Appropriate for Second Harmonic Output

    Nakane Takafumi, Sanagi Minoru, Kamei Ryu, Fujimori Kazuhiro, Nogi Shigeji

    Proceedings of the IEICE General Conference   1   49 - 49   2005

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  • 第2高調波を放射する能動フェーズドアレーアンテナ Reviewed

    佐薙稔, 矢野健治, 藤森和博, 野木茂次

    電子情報通信学会論文誌(C)   J87-C ( 12 )   1113 - 1123   2004.12

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  • FDTD Analysis of Rectification Circuit for Low Power Rectenna

    TORIMARU Yusuke, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Antennas and propagation   104 ( 283 )   5 - 10   2004.9

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    In this paper, we analize rectification circuit for low power microwave rectenna mounting a shottky diode to use FDTD method, and investigate parameters to archive a high RF-DC conversion efficiency by the voltage waveform and the current distribution. In addition, we confirm the availability of this method by comparing the load voltage obtained by FDTD analysis with the measured result.

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  • Miniaturization of Circularly Polarized Wave Patch Antenna with Cross-Shaped Slits

    SAKAMOTO Shuichi, FUJIMORI Kazuhiro, SANAGI Minoru, NOGI Shigeji

    Technical report of IEICE. OPE   104 ( 212 )   87 - 92   2004.7

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    In this paper, we argue about miniaturization of circularly polarized wave patch antenna with cross-shaped slits. By comparing result of analysis to result of experiment, we check the adequacy of FDTD method, and we set up some notches or some cross-shaped slits on the patch antenna to make it small, and we consider miniaturization of circularly polarized wave patch antenna quantitatively by FDTD method. As a result we show 60% miniaturization when we set up four 12mm notches and we show 50% miniaturization when we set up four 12mm cross-shaped slits. Furthermore patch antenna has a high order mode resonance when we set up some notches or cross-shaped slits. We show the factor of this resonance.

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  • Broadband Power Divider/Combiner with Coaxial-Conical-Radial Line Transformation

    EKUNI Suminori, SANAGI Minoru, TANAKA Keisuke, FUJIMORI Kazuhiro, NOGI Shigeji

    IEICE technical report. Microwaves   104 ( 46 )   65 - 71   2004.5

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    Cylindrical power divider/combiner's with coaxial-conical-radial line transformation have been studied, which have broadband and low loss characteristics required for the power dividing-combining system in order to realize microwave high power solid-state amplifiers. The divider/combiner is composed of the central part in which has coaxial-conical-radial line transformation, and the peripheral part in which the coaxial probes are inserted into the radial line. Each part is designed with the electromagnetic simulator in order to have wide bandwidth. The divider/combiner's are constructed by connecting the optimum central and peripheral parts. In the experiment for the prototype twelve-way divider/combiner, the relative bandwidth, in which the return loss is less than -20dB, was achieved with 68.9%.

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  • C-2-65 Traveling-Wave Power Divider Using Microstrip Line Probes

    SANAGI Minoru, EKUNI Suminori, FUJIMORI Kazuhiro, NOGI Sigeji

    Proceedings of the IEICE General Conference   2004 ( 1 )   100 - 100   2004.3

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  • SBC-1-9 Efficient Conversions of Rectification Circuit for Low Power Rectennas

    Ueda Yuusuke, Fujimori Kazuhiro, Nogi Shigeji, Sanagi Minoru

    Proceedings of the IEICE General Conference   2004 ( 1 )   "S - 17"-"S-18"   2004.3

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  • C-2-66 Design of Broadband Multiple-Port Power Divider with Coaxial-Conical-Radial Line Transition

    EKUNI Suminori, SANAGI Minoru, FUJIMORI Kazuhiro, NOGI Sigeji

    Proceedings of the IEICE General Conference   2004 ( 1 )   101 - 101   2004.3

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  • Design of Broadband Power Divider Using a Conical-Radial Line

    SANAGI Minoru, HAYASHI Takuya, NOGI Shigeji

    Proceedings of the Society Conference of IEICE   2003 ( 1 )   84 - 84   2003.9

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  • FDTD Analysis of a Pressed Helical Antenna

    Morimoto Shinya, Fujimori Kazuhiro, Nogi Shigeji, Sanagi Minoru, Yamabayashi Masaaki

    Proceedings of the Society Conference of IEICE   2003 ( 1 )   199 - 199   2003.9

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  • Broadband Multiple-Port Power Divider Using a Conical-Radial line

    SANAGI Minoru, HAYASHI Takuya, NOGI Shigeji

    IEICE technical report. Microwaves   103 ( 131 )   19 - 24   2003.6

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    A conical-radial wave power divider/combiner has been studied, which has broadband and low loss characteristics required for the power dividing-combining system in order to realize microwave high power solid-state amplifiers. In this paper, the optimum design with the electromagnetic simulator for the divider is presented. The divider is composed of the central part in which the input coaxial line is transformed into the conical line followed by the radial line, and the peripheral part in which the coaxial probes are inserted into the radial line. Each part is designed in order to have wide bandwidth. The divider is constructed by connecting the optimum central and peripheral parts. The designed twelve-way divider has the relative bandwidth of 44% in which the return loss is less than -20dB. In the experiment, the wider relative bandwidth was achieved with 47%.

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  • Subharmonic Injection Locking Characteristics of Second Harmonic Oscillator

    YANO Kenji, SANAGI Minoru, NOGI Shigeji

    Proceedings of the IEICE General Conference   2003 ( 1 )   48 - 48   2003.3

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  • Phased array behavior of unilaterally coupled active antennas with varactor diodes Reviewed

    M Sanagi, T Kagawa, S Nogi

    IEICE TRANSACTIONS ON ELECTRONICS   E86C ( 2 )   192 - 198   2003.2

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    A phased array behavior of a unilaterally coupled active antennas has been investigated. The active antenna is composed of a patch antenna and a parallel feedback type oscillator which can be coupled unilaterally to other oscillators without other nonreciprocal components. Numerical calculations of the reduced equations describing the behavior of the coupled oscillators array demonstrated that the phase differences between the oscillators can be varied up to about pi/2 by giving the frequency changes from the injection locking frequency to the oscillators except of the first one. The oscillator mounted with the varactor diode for wide tuning range exhibited the property suitable for constructing the unilaterally coupled array. In the experiments, at X-band, the electromagnetic wave radiated from the five element array was successfully scanned.

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  • Broadband Conical-Radial Line Power Divider Incorporating Coaxial Branch Probes

    Minoru Sanagi, Takuya Hayashi, Kazuhiro Fujimori, Shiegji Nogi

    2003 Asia-Pacific Microwave Conference Proceedings   2003

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  • Spatial power combining using one and two dimensional arrays of circularly polarized active antennas with single point feeds

    KAGAWA Tomomichi, NOGI Shigeji, SANAGI Minoru, SATO Shinichi, IMAI Nobuaki

    IEICE technical report. Microwaves   102 ( 524 )   19 - 24   2002.12

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    In order to realize high power circularly polarized microwave and millimeter-wave radiating sources, spatial power combining of circularly polarized active antennas have been investigated. Circularly polarized active antennas with single point feeds were designed for this purpose, and were measured their circular polarization characteristics under their single active antenna operation. In mutual synchronization for both cases of radiative coupling and transmission-line coupling between two active antennas, the relation of synchronized frequency and output radiation power versus the interval between the active antennas was measured to obtain the synchronization characteristics. Spatial power combining experiment was carried out for one and two dimensional arrays of radiative coupling and for one dimensional arrays of transmission-line coupling. The experimental results show that spatial power-combining of low axial ratios and high combining efficiencies could be attained.

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  • Second Harmonic Oscillator Injection-Locked Subharmonically

    YANO Kenji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   102 ( 524 )   25 - 31   2002.12

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    In order to obtain a stable signal in the higher frequency range, second harmonic oscillators injection-locked subharmonically have been investigated. The oscillator had the optimum load impedance for second harmonic generation at both the fundamental frequency and the second harmonic frequency so that high harmonic output wave could be obtained with the frequency around 17GHz. By experiments on the oscillator injection-locked subharmonically with factor of 1/2 , the stabilization of the oscillation frequency and the degradation of the phase noise were confirmed. The measurements of the locking bandwidth with the injection power level showed that the bandwidth increases with decreasing the subharmonic factor.

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  • 第2高調波を放射する能動パッチアンテナ Reviewed

    佐薙稔, 矢野健治, 野木茂次

    電子情報通信学会論文誌(B)   J85-B ( 9 )   1566 - 1571   2002.9

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  • Power Combining by Axially Symmetrical Fabry-Perot Resonator with Multiple Device Inserted in a Dielectric

    OKI Tetsuya, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   102 ( 69 )   15 - 20   2002.5

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    An axially symmetrical Fabry-Perot resonator with active devices inserted in a dielectric has been investigated for power combining of many more devices in microwave and millimeter wave frequency range. By previous experiments, it was shown that the output power of the individual devices can be combined efficiently when the spacing between the adjacent devices is nearly equal to half wavelength at the operating frequency. The active devices are inserted in the dielectric, in which the wavelength is shorter than that in free space, in order to increase the number of the devices. The device mount was designed by numerical calculation using the boundary element method. In the experiments at X-band, the fabricated combiners with Gunn diodes oscillated stably, and almost perfect power combining was achieved in both the cases of the sixteen diodes and the twenty-two diodes.

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  • Phased Array behavior of Active Antennas Radiating Second Harmonic Output Wave

    YANO Kenji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   102 ( 69 )   9 - 14   2002.5

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    In order to scan a radiation beam more widely, the phased array behavior of active antennas radiating a second harmonic output wave has been investigated. In numerical calculations of a coupled oscillator system modeled on the active antenna array, when the oscillators are coupled by only the fundamental output wave, the variation of the phase differences of the second harmonic output waves between the adjacent oscillators can reach up to 2π, which is twice as much as in the case of the phased array outputting the fundamental wave. By the experiments using the two and four elements arrays, the calculated results were confirmed and the wider scanning ranges of the second harmonic output wave than that of the fundamental output wave were obtained.

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  • Active phased array antenna with self-oscillating harmonic mixers

    Minoru Sanagi, Joji Fujiwara, Shigeji Nogi

    2002 32nd European Microwave Conference, EuMC 2002   2002

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    The active phased array antenna with self-oscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The oscillator has two ports for output of the oscillated power and for injection signal so that the oscillators can be coupled unilaterally without other nonreciprocal components. In the unilaterally coupled array, the phase differences between the local oscillating signals can be varied by changing the local free-running frequencies of the self-oscillating mixers. The receiving directivity can be controlled by combining the IF signals from the individual active antennas. In the experiment using the two-element array, the receiving pattern was scanned successfully. © 2002 IEEE.

    DOI: 10.1109/EUMA.2002.339424

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  • Traveling-Wave Power Divider/Combiner with High Isolation between Coplanar Branching Ports

    Minoru Sanagi, Ryohei Omori, Shigeji Nogi

    2002 Asia-Pacific Microwave Conf. Proc.   2002

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  • Traveling-Wave Power divider/Combiner with Coplanar Waveguide Probe Pairs

    OMORI Ryohei, SANAGI Minoru, NOGI Sigeji

    IEICE technical report. Electron devices   101 ( 416 )   65 - 71   2001.11

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    The new traveling-wave power divider/combiner with the coplanar waveguide probes has been presented. The divider/combiner is composed by connecting successively the dividing units which consist of the coplanar waveguide probe-pair inserted into the rectangular waveguide and the thin narrow section. By the experiment at X-band, it was confirmed that the four-and six-way divider/combiners had the wideband characteristics conparable to the divider/combiner with the coaxial probes. In the four-and six-way dividing-combining systems, the bandwidth wider than 1.7GHz was obtained.

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  • Active Antenna Array with Self-Oscillating Mixers

    FUJIWARA Joji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Electron devices   101 ( 416 )   13 - 18   2001.11

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    The phased array behavior of active antennas with self-oscillating mixers has been investigated. The active antenna is composed of a patch antenna and a two-port oscillator with the unilateral characteristics which operates as the self-oscillating mixer, and down-converts received RF signal into IF signal. In the unilaterally coupled array of the active antennas, the phase differences between local oscillating signals can be obtained by changing the local free-running frequencies of the antennas. When all the IF signals from the individual active antennas are combined, the receiving directivity can be controlled. In the experiment using the two-element array, the receiving pattern was scanned successfully.

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  • Power combining by a Fabry-Perot resonator with active devices mounted on both the mirrors Reviewed

    M Sanagi, S Nogi

    IEICE TRANSACTIONS ON ELECTRONICS   E84C ( 10 )   1575 - 1580   2001.10

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    A power combining technique using a Fabry-Perot resonator with many more active devices is investigated. The Fabry-Perot power combiner consists of two mirrors with a circular groove mounted with the active devices. The power combiner has an axially symmetrical structure and operates at an axially symmetrical TEM01n mode so that uniform device-field coupling required for perfect power combining can be realized. By numerical calculation using the boundary element method, it was shown that high combining efficiency can be obtained when the active devices are mounted in the circular groove of larger radius on either of the two mirrors. In experiments at X-band, power combining efficiency over 90% was obtained for the case of twelve devices on either of the mirrors and the output powers of the twenty or twenty-four devices on both the mirrors were almost perfectly combined.

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  • Power Combining by Ladder Oscillator with Multiple Gunn Diode mounted in HNRD Guide

    SHIMAMURA Koji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   101 ( 100 )   39 - 44   2001.5

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    Power combining techniques using the ladder oscillator which is mounted with multiple Gunn diode along the hyper NRD guide have been demonstrated. In order to determine the distances between the adjacent diodes, the susceptance of the diode with the mount structure is necessary, so that the value of the susceptance was estimated from the measured oscillator characteristic of the oscillator mounted with the two diodes. The oscillators mounted with the more than two diodes were designed by the derived value of the susceptance. In experiments at X-band, almost perfect power combining of the outputs of the three or four diodes was obtained.

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  • Traveling-wave power divider with coplanar waveguide probes inserted into rectangular waveguide Reviewed

    M Sanagi, R Omori, S Nogi

    APMC 2001: ASIA-PACIFIC MICROWAVE CONFERENCE, VOLS 1-3, PROCEEDINGS   149 - 152   2001

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    The new traveling-wave power divider with the coplanar waveguide probes is investigated. The divider is composed by connecting successively the dividing units which consist of the coplanar waveguide probe-pair inserted into the rectangular waveguide and the thin narrow section. By the experiments on the four- and six-way dividers, the wideband characteristics comparable to the divider with the coaxial probes is demonstarted.

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  • ミリ波帯で動作する軸対称型 Fabry-Perot 多素子発振器

    佐薙稔

    平13中国連大, Oct.   2001

  • FD-TD Analysis for Conical-Radial Wave Power Divider/Combiner

    YOKOYAMA Kazuyoshi, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   100 ( 528 )   77 - 84   2000.12

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    A conical-radial wave power divider/combiner has been developed exmerimentally, which has broadband and low loss characteristics required for the power dividing-combining system. Electromagnetic field analysis is necessary for the optimum design of the divider/combiner. In this paper, numerical calculation is carried out using the FD-TD method in cylindrical coordinate system. The divider/combiner is divided into three parts, that is, a converting part from the coaxial line to the radial line through the conical line, a matching window, and peripheral coaxial probes. The scattering parameters of the individual parts are calculated by FD-TD method. The reflection coefficients of the dividers are obtained by combination of these parameters using an equivalent circuit, and are compared with the measured results.

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  • Stable fabry-perot oscillator of high combining efficiency with multiple device inserted in a dielectric

    Minoru Sanagi, Hiroaki Takashima, Shigeji Nogi

    2000 30th European Microwave Conference, EuMC 2000   2000.10

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    An axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric is investigated in order to combine output powers of many more devices in the microwave and millimeter wave frequency range. The mount structure of the active devices was designed by a numerical calculation using the boundary element method. In the experiments at X-band, the oscillator operated stably when the resonator length of the Fabry-Perot resonator was varied, and almost perfect power combining of sixteen Gunn diodes was achieved. © 2000 IEEE.

    DOI: 10.1109/EUMA.2000.338777

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  • Active Phased Array Antenna Radiating Second Harmonic Wave in Higher Frequency Range

    Sanagi Minoru, Fujiwara Joji, Kiyomoto Kazuhiko, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2000 ( 1 )   53 - 53   2000.9

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  • Ladder Oscillator with Multiple Gunn Diode Mounted HNRD Guide

    Sanagi Minoru, Shimamura Koji, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   2000 ( 1 )   62 - 62   2000.9

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  • Unilaterally Coupled Active Antenna Array Controlled by Varactor diode

    Minoru Sanagi, Hisayoshi Yoshikawa, Takuji Hiroma, Shigeji Nogi

    Proc. 2000 Int. Symp. Antennas Propag.   4   1545 - 1548   2000.8

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  • Active Phased Array Antenna Radiating Second Harmonic Wave

    KIYOMOTO Kazuhiko, TSUKIZAWA Takayuki, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Antennas and propagation   100 ( 218 )   43 - 48   2000.7

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    In order to not only obtain a higher frequency radiation but also scan its beam more widely, an active phased array using second harmonic generation is investigated. The active antenna consists of a patch antenna radiating the second harmonic wave, and a FET oscillator which plays owo roles in fundamental oscillator and frequency multiplying. The structure of a coupling network between the adjacent active antannas suitable for the phased array behavior is found by measuring the external quality factor looking at the coupling line of the active antenna. In the experiments, the radiated beam of the second harmonic waves from the two or three element active antenna array were scanned more widely than that in the case of the fundamantal wave radiation.

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  • Phased array characteristics of a 2×2 circularly polarized

    Kagawa T., Morisaki T., Nogi S., Sanagi M.

    Proceedings of the IEICE General Conference   2000 ( 1 )   56 - 56   2000.3

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  • Phased Array Behavior of Active Antennas Controlled by Varactor Diode

    Sanagi Minoru, Yoshikawa Hisayoshi, Hiroma Takuji, Nogi Shigeji

    Proceedings of the IEICE General Conference   2000 ( 1 )   55 - 55   2000.3

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  • Active Phased Array Antenna Controlled by Varactor Diode

    HIROMA Takuji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Antennas and propagation   99 ( 571 )   5 - 10   2000.1

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    In order to realize an active phased array antenna, a phased array behavior of a microwave unilaterally coupled active antenna array which is controlled by frequency changes of the oscillators has been investigated. The active antenna array is couposed by coupling active antennas which consist of patch antennas and parallel feedback type oscillators with unilateral characteristics. A tuning range of the free-running frequency of the oscillator is widened by inserting a varactor diode into a feedback loop of the oscillator. An experiment of a system of two oscillators without antennas has confirmed the phased array behavior. Electromagnetic waves radiated from two, three and four active patch antenna array were successfully scanned.

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  • Hyper NRD Guide Oscillator with Gunn Diodes Mounted in the Dielectric Strip

    SANAGI M.

    2000 Asia-Pacific Microwave Cont. Proc.   1   229 - 232   2000

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  • Multiple Gunn Diode Oscillator Using a Hyper NRD Guide

    SANAGI Minoru, MATSUBAYASHI Kiyoshi, NOGI Shigeji

    IEICE technical report. Microwaves   99 ( 442 )   75 - 80   1999.11

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    A Gunn diode oscillator using a Hyper NRD guide have been investigated. The operating mode of the Hyper NRD guide is lower order than the ordinary NRD guide case, so the mode conversion to undesired modes can be supperssed. In experiments at X-band for the oscillator by mounting a single or double Gunn diode in the dielectric strip of the Hyper NRD guide, the oscillation frequencies could be varied by a movable shorting plane for the single diode case and a perfect power combining operation was obtained for the double diode case.

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  • Second harmonic beam scanning of active antenna array

    Minoru Sanagi, Takayuki Tsukizawa, Shigeji Nogi

    1999 29th European Microwave Conference, EuMC 1999   2   361 - 364   1999.10

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    In order to not only obtain a higher frequency radiation but also scan its beam more widely, an active phased array using second harmonic generation is investigated. The active antenna consists of a FET oscillator which plays two roles in fundamental oscillation and frequency multiplying, and the patch antenna resonated at the second harmonic frequency. In the experiments, the radiated beam of the second harmonic wave from the two element active antenna array was scanned more widely than that in the case of the fundamental wave radiation. © 1999 IEEE.

    DOI: 10.1109/EUMA.1999.338375

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  • Two-dimensional unilaterally coupled active antenna arrays with wide angle beam scanning capability

    Ragip Ispir, Shigeji Nogi, Minoru Sanagi

    1999 29th European Microwave Conference, EuMC 1999   1   68 - 71   1999.10

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    A unilateral coupling scheme for two-dimensional active antenna arrays was developed. Each oscillator is coupled to one of its neighbor oscillators unilaterally in a comb-like arrangement. The phase shifts along both axes of the array can be controlled by adjusting the frequency of only the back oscillators. Two paths, which are different in length and each contains an amplifier, were employed for unilateral coupling. Turning on the desired one out of two amplifiers, one can change the range in which the phase shift can be varied. In a 2×2 experimental oscillator array, the main beam could be scanned 40° in H-plane and 25° in E-plane totally. © 1999 IEEE.

    DOI: 10.1109/EUMA.1999.338342

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  • Second Harmonic Beam Scanning of Active Antenna Array Using FETs

    Sanagi Minoru, Kiyomoto Kazuhiko, Tsukizawa Takayuki, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   1999 ( 1 )   44 - 44   1999.8

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  • Wide angle phase-shifterless beam scanning in unilaterally coupled active antenna arrays Reviewed

    R Ispir, S Nogi, M Sanagi

    IEICE TRANSACTIONS ON ELECTRONICS   E82C ( 7 )   1188 - 1194   1999.7

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    In coupled oscillator arrays, it is possible to control the inter-element phase shift up to 180 degrees by free-running frequency distribution based on injection-locking phenomenon. In this paper, a new technique to control the inter-element phase shift electronically up to the maximum extent of 360 degrees is reported. Oscillators are unilaterally coupled to the preceding oscillator through one of the two paths, which differ from each other 180 degrees in electrical length and each includes an amplifier. Turning on the desired amplifier one can control the phase shift either -180 degrees to 0 degrees or 0 degrees to 180 degrees. The technique was applied in a three-element oscillator array each coupled to a patch antenna via a round aperture. The radiation beam of the array could be scanned 47 degrees in total.

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  • Spatial power combining and phased-array behavior of circularly polarized active patch antennas Reviewed

    T Kagawa, S Nogi, M Sanagi

    IEICE TRANSACTIONS ON ELECTRONICS   E82C ( 7 )   1182 - 1187   1999.7

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    Design of circularly polarized active antennas of dual-fed square patch type is given, and spatial power combining and phased array operation of the antennas have been successfully achieved. In a phased array experiment of the arrays with two and three active antennas by the method of varying their free-running oscillation frequencies, we obtained the scan angles from -12 degrees to + 13 degrees and those from -13 degrees to + 13 degrees, respectively and good axial ratios together with high spatial power-combining efficiencies.

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  • Spatial Power Combining of Second Harmonic Wave Using Active Antenna Array

    TSUKIZAWA Takayuki, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   99 ( 78 )   1 - 6   1999.5

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    In order to derive high radiated power in the higher frequency range, the spatial power combining of the second harmonic wave using the active antenna array is investigated. The active antenna consists of a FET oscillator which plays two roles in fundamental oscillation and frequency multiplying, and the patch antenna which has the measured optimum impedance for second harmonic generation. In the experiment, two active antennas were synchronized and their second harmonic output powers were combined in free space.

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  • Wide Range Beam Steering in Unilaterally Coupled Two-Dimensional Active Antenna Arrays

    ISPIR Ragip, NOGI Shigeji, SANAGI Minoru

    IEICE technical report. Microwaves   99 ( 78 )   13 - 17   1999.5

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    A unilateral coupling scheme for two-dimensional active antenna arrays was developed. Each oscillator couples to a single oscillator unilaterally in a comb-like arrangement. The phase shifts along both axes of the array can be controlled by the free-running frequency of the initial oscillators under injection locking phenomenon. Two paths, which are different in length and each contains an amplifier, were employed for unilateral coupling. Turning on the desired amplifier, one can shift the range in which the phase shift can be varied. In a 2×2 experimental oscillator array, the main beam could be scanned 40° in H-plane and 25° in E-plane totally.

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  • Gunn Diode Oscillator using HNRD Guide

    Watanabe Masataka, Kurahashi Nagatoshi, Sanagi Minoru, Nogi Shigeji

    Proceedings of the IEICE General Conference   1999 ( 1 )   64 - 64   1999.3

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  • C-2-35 A UNILATERALLY COUPLED ACTIVE ANTENNA ARRAY WITH COUPLING ANGLE SWITCHING CAPABILITY FOR WIDE ANGLE BEAM STEERING

    ISPIR Ragip, NOGI Shigeji, SANAGI Minoru

    Proceedings of the IEICE General Conference   1999 ( 1 )   73 - 73   1999.3

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  • Second Harmonic Generation by Active Patch Antenna using FET

    Tsukizawa Takayuki, Sanagi Minoru, Nogi Shigeji

    Proceedings of the IEICE General Conference   1999 ( 1 )   68 - 68   1999.3

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  • Single And Multiple Gunn Diode Oscillator Using an Image NRD Guide

    Minoru Sanagi, Masataka Watanabe, Shigeji Nogi

    1999 Asia-Pacific Microwave Conf. Proc.   1999

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  • FD-TD Analysis of Coaxial Probes Inserted into Rectangular Wareguides(共著) Reviewed

    A. Sanada, M. Sanagi, S. Nogi, K. Yamane

    IEICE Transactions on Electronics   E81-C ( 12 )   1821 - 1830   1998.12

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  • Spatial Power Combining and Phased Array Behavior of Circularly Polarized Active Antennas

    KAGAWA Tomomichi, NOGI Shigeji, SANAGI Minoru, USUI Kouji

    IEICE technical report. Microwaves   98 ( 420 )   7 - 12   1998.11

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    In order to realize the spatial power combining and the phased array behavior of microwave and millimeter-wave circularly polarized active antennas, we designed and manufactured circularly polarized active antennas. We measured their circular polarization characteristics in single active antenna operation, and the mutual synchronization characteristics of two active antennas with similar characteristics to obtain experimentally the relation between the antenna separation and the coupling phase. We carried out phased array experiments using two and three active antennas, and attained the scan angles from -12° to +13° and those from -13° to +13°, respectively, and good axial ratios together with high spatial power-combining efficiencies.

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  • Phased array behavior of two circularly polarized

    Kagawa T., Yamashita T., Nogi S., Sanagi M.

    Proceedings of the Society Conference of IEICE   1998 ( 1 )   134 - 134   1998.9

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  • Active Slot Antenna Array Using Unilateral Coupling

    SONO Masaki, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   98 ( 74 )   47 - 52   1998.5

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    We have investigated an active phased array antenna which is constructed by connecting each oscillator of a unilaterally coupled system to a slot antenna. The unilaterally coupled oscillators system can be composed by the coupling oscillators with unilateral characteristics which consist of FET amplifiers and directional couplers. The slot antenna is electromagnetically coupled to FET oscillators and the array antenna can operate as the phased array by controlling free-running frequencies of the oscillators. Actually we have successfully scanned electromagnetic waves radiated from two antenna array and three antenna array.

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  • Phased Slot Antenna Array Using a Unilaterally Coupled Oscillators System

    Sono Masaki, Sanagi Minoru, Nogi Shigeji

    Proceedings of the IEICE General Conference   1998 ( 1 )   102 - 102   1998.3

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  • Spatial power combining using two circularly polarized active patch antennas

    Kagawa T., Hiasa T., Nogi S., Sanagi M.

    Proceedings of the IEICE General Conference   1998 ( 1 )   105 - 105   1998.3

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  • Spatial Power Combining Using an Active Slot Antanna Array Incorporated with Gunn Diodes

    Sanagi Minoru, Inai Takaaki, Nogi Shigeji

    Proceedings of the IEICE General Conference   1998 ( 1 )   101 - 101   1998.3

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  • On Equivalent Circuit Expression of a Coaxial Probe Inserted into a Waveguide.

    真田篤志, 佐薙稔, 野木茂次, 山根国義

    電子情報通信学会大会講演論文集   1998   113   1998.3

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  • Mutual Locking of Active Slot Antennas Using Gunn Diodes

    INAI Takaaki, SANAGI Minoru, NOGI Shigegi

    IEICE technical report. Microwaves   97 ( 374 )   67 - 74   1997.11

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    In order to combine spatially powers of active devices using an active antenna array, we have investigated a mutual locking behavior of active slot antennas, which are composed of microstrip oscillators using Gunn diodes coupled electromagnetically to slot antennas. We measure characteristics of the microstrip oscillator and the slot antenna electromagnetically coupled to the microstrip line, respectively, so that we design the active slot antenna. A measured radiation pattern whose the active slot antenna is fabricated actually is shown. A coupling coefficient between the active antennas coupled radiatively is caluculated analytically and its phase is compared whith results of experiments on the mutual locking of two antenna array and three antenna array.

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  • Transmission-Line Coupling of Active Microstrip Antennas for One-and Two-Dimensional Phased Arrays(共著) Reviewed

    ISPIR Ragip, NOGI Shigeji, SANAGI Minoru, FUKUI Kiyoshi

    IEICE Transactions on Electronics   E80-C ( 9 )   1211 - 1220   1997.9

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    Several types of transmission-line coupling are analyzed to use in one- and two-dimensional active antenna arrays, and a method is developed to scan the beam of the arrays using the mutual locking theory. To compensate the undesired effect of strong radiative coupling of the nearest neighbor elements on the phased array performance, addition of resistive stubs to the end elements is proposed. In a 1×4 array it was observed that after the connection of resistive stubs, the scanning range of the array increased considerably. The effect of oscillator amplitudes on the phased array behavior is explored numerically. In the experiments main beam of 2×2 and 3×3 active antenna arrays were steered up to 25° and 15°, respectively in the H-plane.

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  • Axially Symmetrical Fabry-Perot Power Combiner with Multiple Devices Inserted in Dielectric Substrate

    Sanagi Minoru, Itoga Toshihide, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   1997 ( 1 )   67 - 67   1997.8

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  • Active Phased Arrays Utilizing Locking Phenomena

    SANAGI Minoru, NOGI Shigeji

    Technical report of IEICE. OPE   97 ( 96 )   51 - 56   1997.6

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    Techniques for phased array operations of active antenna arrays are reviewed. The active antennas which are composed of active devices and antennas are coupled with their adjacent ones in the array so that they can operate at a single frequency due to locking phenomena and their output powers are combined spatially. Various methods for the phased array behaviors by controlling phases of injection signals or frequency changes of the active antennas are described.

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  • Phased Array Behavior of a Unilaterally Coupled FET Oscillators System

    FUKUE Toshihiko, KOMATSU Naoki, SANAGI Minoru, NOGI Shigeji

    Technical report of IEICE. OPE   97 ( 96 )   57 - 62   1997.6

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    In order to realize an active phased array antenna, we have investigated a phased array behavior of a microwave unilaterally coupled oscillators system which is controlled by frequency changes of the oscillators. The unilaterally coupled oscillators system can be composed by coupling oscillators with unilateral characteristics which consist of FETs and directional couplers. By approximate and numerical analyses, we show that the phased array behavior can be realized by varying the frequencies changes of the oscillators except the first oscillator. An experiment on a system of three oscillators has confirmed the phased array behavior. Finally, we have scanned electromagnetic wave using two patch antennas array connected to the FET oscillators.

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  • FD-TD Analysis for Coaxial Probe Inserted into a Waveguide

    SANADA Atsushi, SANAGI Minoru, NOGI Shigeji, YAMANE Kuniyoshi

    Technical report of IEICE. OPE   97 ( 95 )   43 - 48   1997.6

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    Full wave FD-TD analysis has been carried out for single or paired coaxial probes inserted into a rectangular waveguide, including cases for large diameter and extension length of probe structure. For the probe structures, field distribution in waveguide and coaxial probe were calculated. Reflection coefficient and equivalent admittance of the probe agreed very well with experimental results. Maximum operating power which ought to be taken into account for high power application has been also discussed.

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  • FD-TD Analysis for Coaxial Probe Inserted into a Waveguide

    SANADA Atsushi, SANAGI Minoru, NOGI Shigeji, YAMANE Kuniyoshi

    IEICE technical report. Microwaves   97 ( 93 )   43 - 48   1997.6

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    Full wave FD-TD analysis has been carried out for single or paired coaxial probes inserted into a rectangular waveguide, including cases for large diameter and extension length of probe structure. For the probe structures, field distribution in waveguide and coaxial probe were calculated. Reflection coefficient and equivalent admittance of the probe agreed very well with experimental results. Maximum operating power which ought to be taken into account for high power application has been also discussed.

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  • Aaially Symmetrical Fabry-Perot Oscillator with Mutiple Devices Inserted in Dielectric Substrate

    SANAGI Minoru, ITOGA Toshihide, YAMAMOTO Eiji, NOGI Shigeji

    IEICE technical report. Microwaves   97 ( 62 )   55 - 60   1997.5

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    We investigate an axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric substrate for power combining of many more devices in microwave and millimeter wave frequency range. Empirically in this oscillater, efficient power combining is caused when it oscillates approximately at the frequency which corresponds to the wavelength equal to twice the spacing between devices. The wavelength in the dielectric is shorter than in free space, so we tried to insert the devices in the dielectric substrate in order to increase the number of the devices. By measuring the oscillation frequency of the oscillator with twelve devices at X-band, we confirmed that the spacing between devices was about half wavelength in the dielectric. And we achieved almost perfect power combining of sixteen devices.

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  • Phased Array Behavior of a Unilateral Coupled FET Oscillators System

    Fukue Toshihiko, Sanagi Minoru, Komatsu Naoki, Nogi Shigeji

    Proceedings of the IEICE General Conference   1997 ( 1 )   96 - 96   1997.3

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  • Distribution of higher mode by coaxial probe in waveguide.

    真田篤志, 佐薙稔, 野木茂次, 山根国義

    電気・情報関連学会中国支部連合大会講演論文集   48th   280   1997

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  • Active Phased Array Antenna Controlled by Injection Signals and Frequency

    SANAGI Minoru, MIYAKE Fumiaki, NOGI Shigeji

    IEICE technical report. Antennas and propagation   96 ( 374 )   25 - 30   1996.11

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    In order to realize an active phased array antenna, we have investigated a phased array behavior of a microwave coupled oscillators system which has locking sources at both ends and is controlled by phases of the injection signals and frequency change of the oscillator. By approximate and numerical analyses, we show that the phased array behavior can be realized controlled by phase differnecs between two injection signals and frequency change of the oscillator at one end. An experiment on a system of waveguide type oscillators has confirmed the phased array behavior. Finally, we have scanned electromagnetic wave using five active patch antennas array mounted with Gunn diode.

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  • 注入信号により制御する1次元相互結合発振器系のフューズドアレー動作(共著) Reviewed

    香川 福有, 野木 茂次, 佐薙 稔, 福井 廉

    電子情報通信学会論文誌(C-1)   J79-C-I ( 11 )   428 - 438   1996.11

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  • Phased Array Behavior of Coupled Oscillators System Controlled by Injection Signals and Frequency

    Sanagi Minoru, Miyake Fumiaki, Kageyama Masaaki, Nogi Shigeji

    Proceedings of the Society Conference of IEICE   1996 ( 1 )   49 - 49   1996.9

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  • Aaially Symmetrical Fabry-Perot Oscillator with Active Devices Mounted on Both the Mirrors

    YAMAMOTO Eiji, SANAGI Minoru, NOGI Shigeji

    IEICE technical report. Microwaves   96 ( 74 )   81 - 86   1996.5

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    We investigate an axially symmetrical Fabry-Perot oscillator with many more active devices operating in axially symmetrical TEM_01n mode, which has an excellent feature of uniform device-field coupling required for high power combining efficiency. By numerical calculation using the boundary element method, it was shown that high combining efficiency can be obtained when a circular groove of larger radius is installed on either the plane mirror or the concave mirror. In experiments at X-band, power combining efficiency as high as 90% was attained for the case of twelve devices on either of the mirrors and almost perfect power combining of twenty or twenty-four devices mounted on both the mirror was achieved.

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  • Axially Symmetrical Fabry-Perot Power Combiner with Active Devices Mounted on Both the Mirrors

    Yamamoto Eiji, Sanagi Minoru, Nogi Shigeji

    Proceedings of the IEICE General Conference   1996 ( 1 )   48 - 48   1996.3

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  • Phased Array Behavior of Active Patch Antennas System Controlled by Plural Injection Signals

    Sanagi Minoru, Fukue Toshihiko, Kageyama Masaaki, Nogi Shigeji

    Proceedings of the IEICE General Conference   50 - 50   1996

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  • Frequency-Controlled Phased Array Behavior of Active Patch Antennas System

    Kageyama Masaaki, Fukue Toshihiko, Sanagi Minoru, Nogi Shigeji, Fukui Kiyoshi

    Proceedings of the Society Conference of IEICE   1995 ( 1 )   71 - 71   1995.9

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  • FABRY-PEROT MULTIPLE-DEVICE OSCILLATOR USING AN AXIALLY-SYMMETRICAL MODE Reviewed

    M SANAGI, S NOGI, K FUKUI, K WATANABE

    IEICE TRANSACTIONS ON ELECTRONICS   E78C ( 8 )   949 - 956   1995.8

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    We propose an axially symmetrical Fabry-Perot multiple-device oscillator operating at an axially symmetrical TEM(01n)-mode, which has an excellent feature of uniform device-field coupling required for high efficiency power combining. By carrying out the boundary element analysis, it is shown that a plane-mirror output structure is remarkably advantageous compared with a concave-mirror output structure to obtain an adequate output coupling and to enable stable operation characteristic with respect to the axial mode number n. Experiments in X-band confirmed this excellent performance and achieved almost perfect power combining of efficiency as high as 106% and 99% for six- and eight-device case, respectively.

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  • Frequency-Controlled Phased Array Behavior of Coupled Oscillators with a Phase-Locked End

    KAGEYAMA Masaaki, FUKUE Toshihiko, SANAGI Minoru, NOGI Shigeji, FUKUI Kiyoshi

    IEICE technical report. Microwaves   95 ( 73 )   31 - 36   1995.5

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    In order to realize an active phased antenna array, we propose a new phased coupled microwave oscillators system which has a phase-locking source at one end and is controlled by fequency change of the oscillator at the other end. We derive a fundamental equation from a generalized model of the system and give an approximate condition for uniform phase difference between neighboring oscillators. In addition, exact behaviors of the system are obtained numerically. An experiment on a system of three waveguide type oscillators has confirmed the phased array behavior. Actually we have scanned electromagnetic wave using a two active patch antennas array in X-band.

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  • Phased-Array Behavior of Coupled Microwave Oscillators System Controlled by Frequency of One End Oscillator

    Kageyama Masaaki, Sanagi Minoru, Nogi Shigeji, Fukui Kiyoshi

    Proceedings of the IEICE General Conference   1995 ( 1 )   56 - 56   1995.3

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  • Traveling-Wave Microwave Power Divider Composed of Reflectionless Dividing Units Reviewed

    Atsushi Sanada, Kiyoshi Fukui, Shigeji Nogi, Minoru Sanagi

    IEEE Transactions on Microwave Theory and Techniques   43 ( 1 )   14 - 20   1995.1

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    We propose a new waveguide type traveling-wave microwave power divider that is adequate for high power applications. The divider is composed of multiple stages of reflectionless dividing units, each having two output ports. Design formulas for reflectionless equal-power dividing are first derived. Structural parameters for wideband design of two- to six-stage dividers are then obtained by means of numerical analyses based on an equivalent circuit Comparison of experiments at X-band shows good qualitative agreement with the analyses. Typical measured bandwidth for relative divided powers deviation of less than ±0.5 dB was 2.7 GHz, and that for -20 dB return loss was more than 3.2 GHz for the four-stage (eight-way) divider. The divider presented here has excellent features
    the bandwidth for equal-power dividing decreases very little and the bandwidth for low return loss increases with increasing number of the dividing stages. It also has advantages of low insertion loss and flexibility over the number of the dividing stages. Index Terms—Microwave, power dividing, power combining, traveling-wave operation. © 1995 IEEE

    DOI: 10.1109/22.363014

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  • Analysis of Freqnency-Controlled 2-D Phased Coupled Oscillator Arrays

    Ispir Ragip, Nogi Shigeji, Fukui Kiyoshi, Sanagi Minoru

    IEICE technical report. Microwaves   94 ( 375 )   49 - 54   1994.11

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    A fundamental study on the phase control of two-dimensional oscillator arrays is reported.Nonlinear differential equations describing the two-dimensional oscillator array behavior are derived and applied to the class of nearest neighbor coupled oscillators.Those equations are linearized to obtain a relationship between the oscillator phases aiad their free-running frequencies. A nonhnear integration routine was used to simulate the actual oscillator behaviors to compare with the theoretical results.It is shown that detuning the free-running frequencies of the symmetric elements in the same amount but in opposite directions establishes a constant phase progressions along the both directions.

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  • Axially symmetric mode Fabry-perot multiple-device oscillator

    Sanagi Minoru, Kanki Toshiro, Watana Kazuyuki, Nogi Shigeji, Fukui Kiyoshi

    IEICE technical report. Microwaves   94 ( 36 )   63 - 70   1994.5

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    We propose an axially symmetrical quasi-optical multiple-device oscillator using a Fabry-Perot resonator which consists of a plane mirror and a concave mirror.The plane midrror has a circular groove mounted with many solid-state devices so that efficient power combining can be achieved using axially symmetric TEM_01n> or TEM_11n> mode due to uniform device-field coupling. We calculated the electric and magnetic field in the resonater by boundary element method in order to investigate the effect of the groove and a circular output window installed on the plane or the concave mirror.Experiments were carried out at X-band for the case of octuple-device oscillator and satisfactory agreement with the calculation was obtained.By use of a circular output window on the plane mirror,a remarkable increase in power combining efficiency was attained

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  • Phased-Array Behaviors of Chain Coupled Oscillator System Controlled by Frequency Differences

    Nogi Shigeji, Sanagi Minoru, Setta Takefumi, Kagawa Tomomichi, Fukui Kiyoshi

    IEICE technical report. Microwaves   47 - 54   1994

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    Basic studies on the phased-array behaviors of two types of chain coupled microwave oscillator systems are presented.The first type is a unidirectionally coupled oscillator chain in which one end oscillator is different from the others in free-running oscillation frequency.The second type is a mutually coupled oscillator chain in which the free-running oscillation frequencys of both the end oscillators deviate oppositely from the others.It is analytically shown that after attaining synchronization,the systems can operate as active phased arrays which are controlled by the oscillation frequency difference.Experiments on both the systems using three Gunn oscillators agreed well with the analyses.

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  • Fabry-Perot Multiple-Device Oscillator Using an Axially Symmetric Mode Reviewed

    SANAGI M.

    1994 Asia-Pacific Microwave Conference Proc. (Tokyo, Japan)   859 - 862   1994

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  • Traveling‐Wave Microwave Power Divider Composed of Reflectionless Dividing Units.

    真田篤志, 福井廉, 野木茂次, 志村竜宏, 佐薙稔

    電子情報通信学会技術研究報告   93 ( 374(MW93 91-104) )   71 - 78   1993.12

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  • On a Traveling‐Wave Power Divider Using Rectangular Waveguide with Cut‐Off Regions.

    真田篤志, 福井廉, 野木茂次, 佐薙稔, 志村竜宏

    電子情報通信学会技術研究報告   93 ( 80(RCS93 12-21) )   37 - 44   1993.5

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  • Traveling Wave Power Divider Using Rectangular Waveguide with Cut‐Off Regions.

    真田篤志, 福井廉, 佐薙稔, 野木茂次, 桜本学

    電子情報通信学会大会講演論文集   1993 ( Shunki Pt 2 )   2.589   1993.3

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  • Measurement of low frequency electric field using Ti: LiNbO3 optical modulator

    Y. K. Choi, M. Sanagi, M. Nakajima

    IEE proceedings. Part J, Optoelectronics   140 ( 2 )   137 - 140   1993

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    The use of an asymmetric Mach-Zender interferometric amplitude modulator to measure a relatively low frequency electric field strength is described. The sensitiviy of an electric field sensor using a Ti: LiNbO3 optical modulator is strongly affected by the shape of a electrode (probe antenna). To measure the low frequency electric field, a probe antenna of wide effective area is more useful than the usual dipole antenna. As proof of this, the optical modulator was fabricated with a plate-type probe antenna and the usefulness of this antenna tested for measuring low frequency electric field strength.

    DOI: 10.1049/ip-j.1993.0023

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  • Phased-Array Behavior of an Injection-Controlled One-Dimensional Coupled Oscillators system

    Sanagi Minoru, Seta Takefumi, Nogi Shigeji, Fukui Kiyoshi, Kagawa Tomomichi

    IEICE technical report. Microwaves   MW93 - 103   1993

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    In order to develop a new possibility of a spatially power combining oscillators array,we discuss behavior of a one- dimensional coupled oscillators system which has two locking signals with different phases injected at both the ends.We obtain differential equations which describes the system behavior and calculate both the amplitude and phase responses to variation of the phase difference between two injection signals under various conditions.Especially the effect of relative magnitude of injection signals on the phased-array characteristics and the stability of an operating mode against phase disturbance are numerically investigated.A fundamental experiment on the phased array characteristics of three Gunn oscillators system were carried out and the theoretical predictions were confirmed with satisfactory agreement.

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  • AN OPTICAL WAVE-GUIDE BEND WITH ENHANCED CURVATURE AND THE OPTIMIZATION OF ITS STRUCTURE Reviewed

    M SANAGI, M NAKAJIMA

    FIBER AND INTEGRATED OPTICS   9 ( 4 )   329 - 345   1990

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    We have investigated a waveguide bend having enhanced curvature with reduced loss. The waveguide width is made wider toward the inner side of the bend. The numerical analysis, by means of the beam propagation method, showed that the loss of the proposed bend is lower than that of an abrupt bend or a smooth bend of constant curvature. For a typical waveguide, we have optimized the structure of the bend and achieved one order of loss reduction in comparison with an abrupt bend of the same angle.

    DOI: 10.1080/01468039008202922

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  • 折れ曲り光導波路の曲げ角の拡大

    佐薙稔

    信学技報   OQE88 - 113   1988

  • レーザーを利用した高周波電磁界計測

    佐薙稔, 杉原洋, 中島將光

    レーザー研究   15 ( 9 )   734 - 742   1987

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    DOI: 10.2184/lsj.15.734

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  • 準速度整合進行波型光変調電極とその解析 Reviewed

    佐薙稔, 中島將光

    電子通信学会論文誌(C)   J69-C ( 10 )   1291 - 1296   1986

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Presentations

  • Negative Resistance Oscillator with a Packaged FET in Common-Drain Mode

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  • Broadband Four-Way End Launcher Waveguide Power Divider

    Minoru Sanagi and Rentaro Kawakami

    IEICE Technical Report 

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    Event date: 2021.5.20

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Suppression of Undesired Oscillations of a Negative Resistance Oscillator with a Bopolar Transistor in Common-Collector Mode

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    Event date: 2021.3.9 - 2021.3.12

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Waveguide Microwave Power Divider/Combiner with Isolated Ports by Gysel Configuration

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    Event date: 2021.3.9 - 2021.3.12

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Design of a Broadband Four-way End Launcher Waveguide Power Divider/Combiner

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    Event date: 2021.3.9 - 2021.3.12

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Waveguide Microwave Power Divider/Combiner Empioying Gysel Configuration

    Haruhide Kurimasa and Minoru Sanagi

    The 22nd IEEE Hiroshima Student Symposium 

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    Event date: 2020.11.28 - 2020.11.29

    Language:Japanese   Presentation type:Poster presentation  

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  • Design of a Broadband Two-way End Launcher Waveguide Power Divider/Combiner

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    Event date: 2020.10.24

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Microwave Oscillator with a Bipolar Transistor in Common-Collector Mode Controlled Negative Resistance

    Hiroki Yamamoto and Minoru Sanagi

    IEICE Technical Report 

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    Event date: 2020.6.4

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Negative Resistance Control of a Packaged Bipolar Transistor in Common-Collector Mode

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    Event date: 2020.3.17 - 2020.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave-DC Interconversion Using a Series Feedback Oscillator with an FET

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    Event date: 2019.9.10 - 2019.9.13

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave-DC Interconversion Using a Transmission Line Feedback Class F Oscillator with a Bipolar Transistor

    Minoru Sanagi and Ryusuke Wakayama

    IEICE Technical Report 

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    Event date: 2019.5.16

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave-DC Interconversion Using a Class-F Oscillator with a Bipolar Transistor

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    Event date: 2019.3.19 - 2019.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Design of a Four-Way End Launcher Waveguide Power Divider/Combiner

    2018 

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    Event date: 2018.9.11 - 2018.9.14

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Broadband Waveguide Chain Power Divider/Combiner with Microstrip Probe Pairs and Conductiong Posts

    Minoru Sanagi and Takuya Shimamoto

    IEICE Technical Report  2018 

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    Event date: 2018.5.24 - 2018.5.25

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave to DC conversion Using a Voltage-Controlled Oscillator with a Bipolar Transistor in Common-Collector Mode

    2018 

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    Event date: 2018.3.20 - 2018.3.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Design of Broadband Traveling-Wave Power Divider with Microstrip Probe Pairs Inserted into a Rectangular Waveguide

    2018 

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    Event date: 2018.3.20 - 2018.3.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Design of a Microwave Two-Way End Launcher Waveguide Power Divider/Combiner

    Yuma Fukuda and Minoru Sanagi

    The 19th IEEE Hiroshima Student Symposium  2017 

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    Event date: 2017.12.2 - 2017.12.3

    Language:Japanese   Presentation type:Poster presentation  

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  • Microwave-DC Interconversion with a Parallel Feedback Oscillator Using a Bipolar Transistor

    Minoru Sanagi and Yuya Yoshimori

    IEICE Technical Report  2017 

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    Event date: 2017.5.18 - 2017.5.19

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Broadband Traveling-Wave Power Divider with Microstrip Probe Pairs Inserted into a Rectangular Waveguide

    Takuya Shimamoto and Minoru Sanagi

    IEICE Technical Report  2017 

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    Event date: 2017.5.18 - 2017.5.19

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Variable Waveguide Power Divider Controlled with Multiple Conducting Posts

    2017 

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    Event date: 2017.3.22 - 2017.3.25

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave to DC Conversion with a Voltage-Controlled Series Feedback Oscillator

    2017 

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    Event date: 2017.3.22 - 2017.3.25

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave to DC Conversion Using a Parallel Feedback Oscillator with a Bipolar Transistor

    2017 

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    Event date: 2017.3.22 - 2017.3.25

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Compact Waveguide Power Divider Controlling Dividing Ratio with Multiple Conducting Posts

    Yoshihiro Hata and Minoru Sanagi

    IEICE Technical Report  2017 

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    Event date: 2017.3.2 - 2017.3.3

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave to DC Conversion Using a Series Feedback Oscillator with a Bipolar Transistor

    2016 

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    Event date: 2016.9.20 - 2016.9.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Negative Resistance Oscillators with a Bipolar Transistor in Common-Collector Mode

    2016 

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    Event date: 2016.9.20 - 2016.9.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Microwave to DC Conversion with a Series Feedback Oscillator

    Minoru Sanagi and Kazuki Kawano

    IEICE Technical Report  2016 

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    Event date: 2016.5.19 - 2016.5.20

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Microwave Oscillator with a Bipolar Transistor in Common-Collector Mode and its Application to Microwave to DC Conversion

    Minoru Sanagi and Takahiro Nakata

    IEICE Technical Report  2016 

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    Event date: 2016.5.19 - 2016.5.20

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Variable Waveguide Power Divider with Four Conducting Posts

    2015 

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    Event date: 2015.9.8 - 2015.9.11

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Broadband Waveguide to Microstrip Line Transitions Designed with their Equivalent Circuit

    Minoru Sanagi and Ken-ichi Kawashima

    IEICE Technical Report  2014 

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    Event date: 2014.5.22 - 2014.5.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • A Broadband Waveguide to Microstrip Line Transition with a Probe on the Back Short Side

    Minoru Sanagi

    2014 IEICE General Conference  2014 

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    Event date: 2014.3.18 - 2014.3.21

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 導体棒により制御する導波管型可変電力分配器

    川乱 遼, 佐薙 稔

    平成25年度電気・情報関連学会中国支部第64回連合大会講演論文集, 講演番号11-6, 388貢  2013 

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    Event date: 2013.10.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山市  

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  • Design of a Broadband Waveguide to Microstrip Line Transition Based on its Equivalent Circuit

    2013 

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    Event date: 2013.9.17 - 2013.9.20

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 方形導波管中に挿入したマイクロストリッププローブの等価回路と導波管-マイクロストリップ線路変換器への応用

    IEICE Technical Report  2013 

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    Event date: 2013.5.30 - 2013.5.31

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Design of Broadband Rectangular Waveguide Chain Power Divider with Microstrip Line Probe Pairs

    Minoru Sanagi and Hiroshi Kawanishi

    2013 IEICE General Conference  2013 

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    Event date: 2013.3.19 - 2013.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Harmonic Mixers with High Conversion Gain by Manipulation of Harmonics of Local Oscillating Signal

    Masaki Takahashi and Minoru Sanagi

    2013 IEICE General Conference  2013 

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    Event date: 2013.3.19 - 2013.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Equivalent Circuit for a Microstrip Line Probe Inserted into a Rectangular Waveguide

    Minoru Sanagi, Kodai Yamamoto, and Hiroshi Kawanishi

    2013 IEICE General Conference  2013 

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    Event date: 2013.3.19 - 2013.3.22

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 逆F級増幅動作における電圧および電流波形

    佐薙 稔

    電子情報通信学会2012年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-14, 40頁  2012  電子情報通信学会

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    Event date: 2012.9.11 - 2012.9.14

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山市  

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  • A Waveguide Power Dividing Switch Controlling the Dividing Ratio

    2012 IEICE General Conference  2012 

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    Event date: 2012.3.20 - 2012.3.23

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Traveling-Wave Power Divider/Combiner with High Isolation among Dividing Units

    Hiroshi Kawanishi, Minoru Sanagi, Kazuhiro Fujimori, Shigeji Nogi

    IEICE Technical Report  2011.12.15 

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    Event date: 2011.12.15 - 2011.12.16

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 高アイソレートされた分配ユニットをもつ進行波型電力分配/合成器

    佐薙 稔, 川西 裕士, 藤森 和博, 野木 茂次

    平成23年度電気・情報関連学会中国支部第62回連合大会講演論文集, 講演番号13-4, 281貢  2011 

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    Event date: 2011.10.22

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島市  

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  • バランを用いた高効率な平衡形周波数2逓倍器

    佐薙 稔, 相見孝侑, 藤森和博, 野木茂次

    電子情報通信学会2011年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-4, 28頁  2011  電子情報通信学会

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    Event date: 2011.9.13 - 2011.9.16

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:札幌市  

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  • Equivalent Circuit for a Coaxial Probe Pair Inserted into a Rectangular Waveguide

    2011 IEICE General Conference  2011 

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    Event date: 2011.3.14 - 2011.3.17

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • Measurement of scattering parameters of devices with waveguide ports and coaxial line ports using unknown "thru" caliblation

    Minoru Sanagi, Kazuhiro Fujimori, and Shigeji Nogi

    IEICE Technical Report  2010 

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    Event date: 2010.12.16 - 2010.12.17

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 負荷抵抗値を初期条件としたRF-DC変換回路の高効率設計に関する検討

    今井翔平, 藤森和博, *佐薙稔, 野木茂次

    平成22年度電気・情報関連学会中国支部第61回連合大会講演論文集, 講演番号11-1, 169貢  2010 

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    Event date: 2010.10.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山県総社市  

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  • マルチフィジックス解析による無線送電システム用トランスデューサの設計

    繁田裕介, 藤森和博, *佐薙稔, 野木茂次

    平成22年度電気・情報関連学会中国支部第61回連合大会講演論文集, 講演番号9/14-3, 167貢  2010 

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    Event date: 2010.10.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山県総社市  

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  • 無線送電用RF-DC変換回路の変換効率におけるダイオード等価回路パラメータ依存性

    田丸翔一, 藤森和博, *佐薙稔, 野木茂次

    平成22年度電気・情報関連学会中国支部第61回連合大会講演論文集, 講演番号11-2, 170貢  2010 

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    Event date: 2010.10.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山県総社市  

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  • 導波管に挿入した同軸プローブの等価回路について

    佐薙稔, 藤森和博, 野木茂次

    平成22年度電気・情報関連学会中国支部第61回連合大会講演論文集, 講演番号1-2, 528貢  2010 

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    Event date: 2010.10.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山県総社市  

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  • 超高分解能到来方向推定アルゴリズムの弾性波への適用と基礎実験

    堀祐貴, 藤森和博, *佐薙稔, 野木茂次

    平成22年度電気・情報関連学会中国支部第61回連合大会講演論文集, 講演番号9/14-4, 168貢  2010 

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    Event date: 2010.10.23

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山県総社市  

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  • 低損失化な機械的に分配比可変の導波管型電力分配器

    IEICE Technical Report  2010 

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    Event date: 2010.5.13 - 2010.5.14

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 機械的に分配比を可変できる導波管型電力分配器の低損失化

    小路宗博, *佐薙稔, 野木茂次, 浜本研一, 丹羽直幹, 高木賢二

    電子情報通信学会2010年総合大会エレクトロニクス講演論文集1,講演番号C-2-93, 136頁  2010 

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    Event date: 2010.3.16 - 2010.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:仙台市  

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  • 建物内マイクロ波配電システムのための完全整合型電力分配スイッチ

    松端孝太, *佐薙 稔, 野木茂次, 丹羽直幹

    電子情報通信学会2010年総合大会エレクトロニクス講演論文集1,講演番号C-2-94, 137頁  2010 

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    Event date: 2010.3.16 - 2010.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:仙台市  

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  • 同軸線路ポートと導波管ポートを持つ回路素子の測定のためのネットワークアナライザの校正

    *佐薙稔, 吉岡秀浩, 小路宗博, 藤森和博, 野木茂次

    電子情報通信学会2010年総合大会エレクトロニクス講演論文集1,講演番号C-2-120, 163頁  2010 

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    Event date: 2010.3.16 - 2010.3.19

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:仙台市  

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  • LE-FDTD法を用いた伝送線路形CRLHによる2次元構造メタマテリアルの特性解析

    山下弘晃, 塚越拓哉, 藤森和博, *佐薙稔, 野木茂次

    第11回IEEE広島支部学生シンポジウム,A-21  2009 

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    Event date: 2009.11.21 - 2009.11.22

    Language:Japanese   Presentation type:Poster presentation  

    Venue:宇部市  

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  • レクテナアレーにおける電力合成法が出力電力に与える影響

    平松保男, 藤森和博, *佐薙稔, 野木茂次

    第11回IEEE広島支部学生シンポジウム,A-24  2009 

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    Event date: 2009.11.21 - 2009.11.22

    Language:Japanese   Presentation type:Poster presentation  

    Venue:宇部市  

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  • 等方性の波動伝搬を供する二次元CRLH構造の特性解析

    今井 翔平, 藤森 和博, *佐薙 稔, 野木 茂次

    平成21年度電気・情報関連学会中国支部第60回連合大会講演論文集, 講演番号11-4, 283貢  2009 

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    Event date: 2009.10.17

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島市  

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  • 伝送線路型CRLHメタマテリアルの特性解析を目的としたLE-FDTD法におけるモデリング

    山下 弘晃, 藤森 和博, *佐薙 稔, 野木 茂次

    平成21年度電気・情報関連学会中国支部第60回連合大会講演論文集, 講演番号11-15, 295貢  2009 

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    Event date: 2009.10.17

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島市  

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  • 建物内マイクロ波配電システムのための反射の少ない導波管型電力分配スイッチ

    松端孝太, *佐薙稔, 野木茂次, 丹羽直幹

    電子情報通信学会2009年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-94, 122頁  2009 

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    Event date: 2009.9.15 - 2009.9.18

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:新潟市  

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  • 建物内マイクロ波配電システムのための機械的に分配比を可変できる導波管型電力分配器

    *佐薙稔, 小路宗博, 濱島浩志, 野木茂次, 浜本研一, 丹羽直幹, 高木賢二, 篠原真毅, 三谷友彦

    電子情報通信学会技術研究報告, 109巻62号, 講演番号MW2009-9, 1頁-6頁  2009 

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    Event date: 2009.5.28

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岡山市  

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  • 広帯域な円筒形多分岐電力分配/合成器の分岐数に依存しない設計

    鎌田裕之, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2009年総合大会エレクトロニクス講演論文集1,講演番号C-2-39, 78頁  2009 

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    Event date: 2009.3.17 - 2009.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛県松山市  

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  • 処理する高調波数が有限な場合の逆C級周波数2逓倍動作

    岸田武紘, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2009年総合大会エレクトロニクス講演論文集1,講演番号C-2-33, 72頁  2009 

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    Event date: 2009.3.17 - 2009.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛県松山市  

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  • 同軸アダプタを用いない導波管型電力分配器から台形導波管への出力結合

    *佐薙稔, 松端孝太, 野木茂次, 浜本研一, 宇治川智, 丹羽直幹, 高木賢二, 三谷友彦, 篠原真毅

    電子情報通信学会2009年総合大会エレクトロニクス講演論文集1,講演番号C-2-83, 122頁  2009 

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    Event date: 2009.3.17 - 2009.3.20

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛媛県松山市  

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  • 広帯域な同軸-コニカル-ラジアル線路変換部をもつ円筒型多分岐電力分配/合成器

    鎌田裕之, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 108巻350号, 講演番号MW2008-162,91頁-96頁  2008 

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    Event date: 2008.12.12

    Presentation type:Oral presentation (general)  

    Venue:富山市  

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  • 高周波コンポーネント設計ツール開発を目的とした寄生素子を有する平面型アンテナの特性解析

    陶山欣一郎, 藤森和博, *佐薙稔, 野木茂次

    第10回IEEE広島支部学生シンポジウム,B-23,pp.154-156  2008 

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    Event date: 2008.11.21 - 2008.11.23

    Presentation type:Poster presentation  

    Venue:広島市  

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  • 先端開放ひし形アンテナを用いたレクテナの開発

    平松保男, 藤森和博, *佐薙稔, 野木茂次

    第10回IEEE広島支部学生シンポジウム,A-11,pp.233-235  2008 

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    Event date: 2008.11.21 - 2008.11.23

    Presentation type:Poster presentation  

    Venue:広島市  

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  • マルチバンドアンテナの効率的な自動設計に関する検討

    川島啓, 藤森和博, *佐薙稔, 野木茂次

    第10回IEEE広島支部学生シンポジウム,C-11,pp.99-101  2008 

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    Event date: 2008.11.21 - 2008.11.23

    Presentation type:Poster presentation  

    Venue:広島市  

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  • 拡張キャビティモード法による寄生素子を有する平面型アンテナの特性解析

    陶山欣一郎, 藤森和博, *佐薙稔, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号11-4, 546貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 分配比の可変範囲の広い導波管型可変電力分配器の設計

    *佐薙稔, 小路宗博, 藤森和博, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号11-2, 544貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 整合線路と隅切り曲がりを併用することで低反射化した同軸コニカルラジアル線路変換部

    鎌田裕之, *佐薙稔, 藤森和博, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号11-1, 543貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 二次元透明マントの電気的な等価回路表現とその設計パラメータ

    今井翔平, 藤森和博, *佐薙稔, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号11-5, 547貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 超音波による電力伝送システムの基礎実験系の開発

    繁田裕介, 藤森和博, *佐薙稔, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号15-21, 255貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 遺伝的アルゴリズムの特性を考慮したマルチバンドアンテナの自動設計法

    川島啓, 藤森和博, *佐薙稔, 野木茂次

    平成20年度電気・情報関連学会中国支部第59回連合大会講演論文集, 講演番号11-3, 545貢  2008 

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    Event date: 2008.10.25

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 建築構造物を用いたマイクロ波無線ユビキタス電源の実現(その6)統合システムの製作と検証

    浜本研一, 丹羽直幹, 高木賢二, 宇治川智, 篠原真毅, 三谷友彦, *佐薙稔, 野木茂次

    日本建築学会2008年度大会(中国)学術講演梗概集, 講演番号41617, 1257貢-1258貢  2008 

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    Event date: 2008.9.18 - 2008.9.20

    Presentation type:Oral presentation (general)  

    Venue:広島市東広島市  

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  • 素子動作の上限に近い周波数帯での第2高調波出力発振器

    *佐薙稔, 韓龍梅, 岸田武紘, 藤森和博, 野木茂次

    電子情報通信学会2008年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-5, 30頁  2008 

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    Event date: 2008.9.16 - 2008.9.19

    Presentation type:Oral presentation (general)  

    Venue:神奈川県川崎市  

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  • 高さの低いラジアル線路を用いた広帯域な12分配電力分配/合成器

    鎌田裕之, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2008年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-57, 82頁  2008 

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    Event date: 2008.9.16 - 2008.9.19

    Presentation type:Oral presentation (general)  

    Venue:神奈川県川崎市  

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  • 入力信号が大きいときの逆C級高効率2逓倍回路の動作

    岸田武紘, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2008年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-20, 45頁  2008 

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    Event date: 2008.9.16 - 2008.9.19

    Presentation type:Oral presentation (general)  

    Venue:神奈川県川崎市  

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  • 逆C級動作による効率的な周波数2逓倍動作の原理

    岸田武紘, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 108巻195号, 講演番号MW2008-99,113頁-118頁  2008 

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    Event date: 2008.8.28 - 2008.8.29

    Presentation type:Oral presentation (general)  

    Venue:大阪府豊中市  

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  • 第3高調波出力発振器の高出力・高効率化の検討

    縄田英和, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2008年総合大会エレクトロニクス講演論文集1,講演番号C-2-15, 48頁  2008 

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    Event date: 2008.3.18 - 2008.3.21

    Presentation type:Oral presentation (general)  

    Venue:北九州学術研究都市  

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  • 逆C級高効率逓倍回路の基本動作

    岸田武紘, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2008年総合大会エレクトロニクス講演論文集1,講演番号C-2-31, 64頁  2008 

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    Event date: 2008.3.18 - 2008.3.21

    Presentation type:Oral presentation (general)  

    Venue:北九州学術研究都市  

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  • 建物内マイクロ波配電システムのための可変電力分配器の特性

    濱島浩志, *佐薙稔, 野木茂次, 浜本研一, 丹羽直幹, 高木賢二, 篠原真毅, 三谷友彦

    電子情報通信学会2008年総合大会エレクトロニクス講演論文集1,講演番号C-2-53, 86頁  2008 

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    Event date: 2008.3.18 - 2008.3.21

    Presentation type:Oral presentation (general)  

    Venue:北九州学術研究都市  

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  • 試作した導波管型可変電力分配器の特性

    濱島浩志, *佐薙稔, 野木茂次, 浜本研一, 丹羽直幹, 高木賢二, 篠原真毅, 三谷友彦

    平成19年度電気・情報関連学会中国支部第58回連合大会講演論文集, 講演番号11-2, 490貢  2007 

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    Event date: 2007.10.20

    Presentation type:Oral presentation (general)  

    Venue:広島県東広島市  

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  • LE-FDTD法におけるデバイス実装部で発生する位相誤差の補正の検討

    山本綱之, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2007年通信ソサイエィ大会講演論文集1, 講演番号B-1-147, 147頁  2007 

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    Event date: 2007.9.13

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 機械的に分配比を可変できる導波管型電力分配器の設計

    *佐薙稔, 濱島浩志, 野木茂次, 浜本研一, 丹羽直幹, 高木賢二, 篠原真毅, 三谷友彦

    電子情報通信学会2007年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-51, 73頁  2007 

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    Event date: 2007.9.10 - 2007.9.14

    Presentation type:Oral presentation (general)  

    Venue:鳥取市  

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  • 建築構造物を用いたマイクロ波無線ユビキタス電源の実現 (その4)高性能可変分岐アダプタの開発

    浜本 研一, 丹羽 直幹, 高木 賢二, *佐薙 稔, 野木 茂次, 篠原 真毅, 三谷 友彦

    日本建築学会2007年度大会(九州)学術講演梗概集, 講演番号41617, 1257貢-1258貢  2007 

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    Event date: 2007.8.29

    Presentation type:Oral presentation (general)  

    Venue:福岡市  

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  • 第2高調波の効率的な生成に適したFETの入力および出力回路

    岸田武紘, *佐薙稔, 高橋伸悟, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 107巻49号, 講演番号MW2007-21,49頁-54頁  2007 

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    Event date: 2007.5.22

    Presentation type:Oral presentation (general)  

    Venue:兵庫県姫路市  

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  • レクテナにおける清流回路部受信電力が変換効率に及ぼす影響

    山本綱之, 高垣達也, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2007年総合大会通信講演論文集1,講演番号B-1-172, 172頁  2007 

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    Event date: 2007.3.21

    Presentation type:Oral presentation (general)  

    Venue:名古屋市  

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  • 効率的な第2高調波発生に適したFETのゲート入力回路

    *佐薙稔, 岸田武紘, 高橋伸吾, 藤森和博, 野木茂次

    電子情報通信学会2007年総合大会エレクトロニクス講演論文集1,講演番号C-2-14, 47頁  2007 

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    Event date: 2007.3.20

    Presentation type:Oral presentation (general)  

    Venue:名古屋市  

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  • 水平面内無指向性を有する平面型ノッチアレーアンテナ

    藤森和博, 川島啓, *佐薙稔, 野木茂次, 新井宏之

    電子情報通信学会2007年総合大会通信講演論文集1,講演番号B-1-139, 139頁  2007 

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    Event date: 2007.3.20

    Presentation type:Oral presentation (general)  

    Venue:名古屋市  

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  • マイクロストリップ線路プローブの接地導体が短絡板側にある進行波型電力分割/合成器

    *佐薙稔, 田中恵祐, 藤森和博, 野木茂次

    平成18年度電気・情報関連学会中国支部第57回連合大会講演論文集,講演番号11-5,551頁  2006 

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    Event date: 2006.10.21

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  • FDTD Analysis Cinsidered Undesirable Radiation of RF-DC Conversion Circuit for Microwave Power transmission System

    K.Fujimori, T.Takagaki, T.Yamamoto, M.Sanagi, S.Nogi

    2006 Korea-Japan Joint Conf. on AP/EMCJ/EMT, pp.149-152  2006 

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    Event date: 2006.9.23

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  • 4端子対等価回路を用いたFET発振器のモデル化

    川嶋尚人, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2006年通信ソサイエィ大会講演論文集1, 講演番号B-1-148, 148頁  2006 

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    Event date: 2006.9.22

    Venue:金沢市  

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  • 拡張FDTD法によるRF-DC変換回路の設計

    高垣達也, 山本綱之, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2006年通信ソサイエィ大会講演論文集1, 講演番号B-1-145, 145頁  2006 

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    Event date: 2006.9.22

    Venue:金沢市  

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  • 局部発振信号のリアクティブ終端による高調波ミクサの高効率化

    *佐薙稔, 須藤洋之, 藤森和博, 野木茂次

    電子情報通信学会2006年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-29, 48頁  2006 

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    Event date: 2006.9.20

    Venue:金沢市  

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  • 高いドレーン効率を持つ電圧制御第2高調波出力発振器

    高橋伸悟, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2006年エレクトロニクスソサイエィ大会講演論文集1, 講演番号C-2-21, 40頁  2006 

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    Event date: 2006.9.19

    Venue:金沢市  

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  • Broadband Traveling-Wave Power Divider/Combiner with Isolated Branch Port Pairs

    M.Sanagi, K.Tanaka, K.Fujimori, S.Nogi

    2006 China-Japan Joint Microw. Conf. Proc., vol.1, no.F2-2, pp.298-301  2006.8 

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    Event date: 2006.8.25

    Venue:中華人民共和国成都  

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  • FETを用いた第2高調波出力発振器におけるゲートへの入力回路の検討

    高橋伸悟, *佐薙稔, 根石修明, 中根貴史, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 106巻48号, 講演番号MW2006-12,1頁-5頁  2006 

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    Event date: 2006.5.18

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  • 2次高調波の影響を考慮したRF-DC変換回路の特性

    高垣達也, 藤森和博, *佐薙稔, 野木 茂次

    電子情報通信学会技術研究報告, 講演番号SPS2005-26,11頁-16頁  2006 

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    Event date: 2006.4.20

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  • 高調波を考慮したレクテナ回路の変換効率の改善

    高垣達也, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2006年総合大会通信通信講演論文集1,講演番号CBS-1-3, S-5頁-S-6頁  2006 

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    Event date: 2006.3.26

    Venue:東京都世田谷区  

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  • 拡張FDTD法による増幅器一体型アクティブアンテナの特性解析

    川嶋尚人, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2006年総合大会通信講演論文集1,講演番号B-1-67, 67頁  2006 

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    Event date: 2006.3.25

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  • 電圧源法を用いてSパラメータを導入する拡張FDTD法の検討

    白石達也, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会2006年総合大会通信講演論文集1,講演番号B-1-37, 37頁  2006 

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    Event date: 2006.3.24

    Venue:東京都世田谷区  

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  • 高いRF-IF変換効率を持つ能動集積アンテナミキサ

    高品祐亮, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 105巻486号, 講演番号MW2005-130,13頁-18頁  2005 

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    Event date: 2005.12.16

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  • マルチキャリア無線電力伝送システムにおけるマイクロ波帯整流回路の特性

    多田和矢, 藤森和博, *佐薙稔, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号B-28,137頁-138頁  2005 

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    Event date: 2005.11.27

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  • デバイスの等価回路を組み込んだFDTD 法の効率化に関する一検討

    川嶋尚人, 藤森和博, *佐薙稔, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号B-24,127頁-130頁  2005 

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    Event date: 2005.11.27

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  • マイクロ波整流回路における第2次高調波のRF-DC変換効率に与える影響

    高垣達也, 藤森和博, *佐薙稔, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号B-25,131頁-133頁  2005 

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    Event date: 2005.11.27

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  • 水平偏波無指向性ノッチアンテナ

    原田敬史, 藤森和博, *佐薙稔, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号A-35,159頁-160頁  2005 

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    Event date: 2005.11.26

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  • 高いRF-IF 変換効率を持つ能動集積アンテナ

    高品祐亮, *佐薙稔, 藤森和博, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号A-29,52頁-53頁  2005 

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    Event date: 2005.11.26

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  • 広帯域に渡ってアイソレーション特性の高い分岐ポート対を持つ進行波型電力分割/合成器

    田中恵祐, *佐薙稔, 藤森和博, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号A-32,58頁-59頁  2005 

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    Event date: 2005.11.26

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  • マルチパス伝搬環境エミュレータの開発

    藤崎一禎, 藤森和博, *佐薙稔, 野木茂次

    第7回IEEE広島支部学生シンポジウム論文集, 講演番号A-34,157頁-158頁  2005 

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    Event date: 2005.11.26

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  • 第2次高調波抑制によるマイクロ波整流回路の高効率化についての検討

    高垣達也, 藤森和博, *佐薙稔, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-6,52頁  2005 

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    Event date: 2005.10.22

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  • マイクロ波帯無線電力伝送用整流回路のマルチキャリアシステムにおける特性

    多田和矢, 藤森和博, *佐薙稔, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-1,47頁  2005 

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    Event date: 2005.10.22

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  • マルチパス伝搬環境エミュレータの特性に関する検討

    藤崎一禎, 藤森和博, *佐薙稔, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-2,48頁  2005 

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    Event date: 2005.10.22

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  • 水平面内水平偏波無指向性ノッチアンテナ

    原田敬史, 藤森和博, *佐薙稔, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-3,49頁  2005 

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    Event date: 2005.10.22

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  • プローブ対を導波管に挿入した構造の進行波型電力分割/合成器のアイソレーション特性

    *佐薙稔, 田中恵祐, 藤森和博, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-4,50頁  2005 

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    Event date: 2005.10.22

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  • 非線形デバイスの等価回路を組み込んだFDTD法の効率化に関する一検討

    川嶋尚人, 藤森和博, *佐薙稔, 野木茂次

    平成17年度電気・情報関連学会中国支部第56回連合大会講演論文集,講演番号11-5,51頁  2005 

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    Event date: 2005.10.22

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  • FDTD法による非線形デバイスが実装された回路解析の効率化に関する一検討

    藤森和博, 川嶋尚人, *佐薙稔, 野木茂次

    電子情報通信学会2005年通信ソサイエィ大会講演論文集1, 講演番号B-1-111, 111頁  2005 

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    Event date: 2005.9.22

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  • 最適な基本波負荷を持つ第2高調波出力発振器

    中根貴史, *佐薙稔, 高橋伸悟, 亀井龍, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 105巻60号, 講演番号MW2005-19,43頁-48頁  2005 

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    Event date: 2005.5.19

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  • 高アイソレーションなマイクロストリップ線路プローブ対を持つ進行波型導波管電力分割/合成器

    田中恵祐, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 105巻60号, 講演番号MW2005-18,37頁-42頁  2005 

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    Event date: 2005.5.19

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  • マイクロストリップ線路プローブ対を用いた進行波型導波管電力分割/合成器

    田中恵祐, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2005年総合大会エレクトロニクス講演論文集1,講演番号C-2-55, 88頁  2005 

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    Event date: 2005.3.22

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  • 高さの低いラジアル線路を用いた広帯域な多分岐電力分割器

    江國純範, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2005年総合大会エレクトロニクス講演論文集1,講演番号C-2-54, 87頁  2005 

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    Event date: 2005.3.22

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  • 空間結合を低減した線路結合4素子円偏波アクティブアンテナのフェーズドアレー動作

    香川福有, 越智大輔, 野木茂次, *佐薙稔, 今井伸明, 佐藤眞一

    電子情報通信学会2005年総合大会エレクトロニクス講演論文集1,講演番号C-2-130, 163頁  2005 

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    Event date: 2005.3.21

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  • 第2高調波発生に適した基本波負荷インピーダンスを持つ発振器

    中根貴史, *佐薙稔, 亀井龍, 藤森和博, 野木茂次

    電子情報通信学会2005年総合大会エレクトロニクス講演論文集1,講演番号C-2-16, 49頁  2005 

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    Event date: 2005.3.21

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  • 結合線路構造を有するマイクロ波整流回路の特性

    多田和矢, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会技術研究報告, 講演番号SPS2004-07,11頁-14頁  2005 

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    Event date: 2005.1.24

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  • 電波到来方向推定システムの基礎検討

    藤崎一禎, 藤森和博, *佐薙稔, 野木茂次

    第6回IEEE広島支部学生シンポジウム論文集, 139頁-140頁  2004 

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    Event date: 2004.12.5

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  • 反射の少ない同軸-マイクロストリップ線路変換部

    田中恵祐, *佐薙稔, 藤森和博, 野木茂次

    第6回IEEE広島支部学生シンポジウム論文集, 98頁-99頁  2004 

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    Event date: 2004.12.5

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  • 第2高調波出力発振器の最適負荷インピーダンスに関する検討

    中根貴文, *佐薙稔, 藤森和博, 野木茂次

    第6回IEEE広島支部学生シンポジウム論文集, 119頁-120頁  2004 

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    Event date: 2004.12.5

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  • 結合線路を有するマイクロ波帯整流回路の特性

    多田和矢, 藤森和博, *佐薙稔, 野木茂次

    第6回IEEE広島支部学生シンポジウム論文集, 70頁-71頁  2004 

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    Event date: 2004.12.5

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  • MIMOシステムのための電波伝搬特性の解析

    山本綱之, 藤森和博, *佐薙稔, 野木茂次

    第6回IEEE広島支部学生シンポジウム論文集, 137頁-138頁  2004 

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    Event date: 2004.12.5

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  • 多段コニカル線路を持つ同軸-ラジアル線路変換器

    *佐薙稔, 江國純範, 藤森和博, 野木茂次

    平成16年度電気・情報関連学会中国支部第55回連合大会講演論文集,講演番号071120,178頁  2004 

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    Event date: 2004.10.16

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  • 第2高調波出力発振器の注入同期特性の測定

    亀井龍, *佐薙稔, 藤森和博, 野木茂次

    平成16年度電気・情報関連学会中国支部第55回連合大会講演論文集,講演番号071119,177頁  2004 

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    Event date: 2004.10.16

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  • 素子マウントが出力部に直結したFabry-Perot多素子発振器

    *佐薙稔, 中西信人, 藤森和博, 野木茂次

    平成16年度電気・情報関連学会中国支部第55回連合大会講演論文集,講演番号071120,178頁  2004 

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    Event date: 2004.10.16

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  • 高効率な自励発振高調波ミキサを持つ能動アンテナ

    *佐薙稔, 高品祐亮, 藤森和博, 野木茂次

    電子情報通信学会2004年エレクトロニクスソサイエティ大会講演論文集1,講演番号C-2-30,46頁  2004 

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    Event date: 2004.9.24

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  • 小電力受電レクテナ用整流回路のFDTD解析

    鳥丸雄祐, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会技術研究報告, 104巻283号, 講演番号A・P2004-125,6頁-10頁  2004 

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    Event date: 2004.9.9

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  • 小電力用レクテナのダイオード実装部構造による整流特性への影響についての基礎検討

    植田雄祐, 鳥丸雄祐, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会技術研究報告, 講演番号SPS2004-01,1頁-6頁  2004 

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    Event date: 2004.9.9

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  • Chain Power Divider/Combiner with Microstrip Line Probes Inserted into a Rectangular Waveguide

    M.Sanagi, S.Ekuni, K.Fujimori, S.Nogi

    Proc. 2004 China-Japan Joint Meeting on Microwaves, A-1-12, pp.41-44  2004.8 

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    Event date: 2004.8.5

    Venue:中華人民共和国ハルピン  

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  • 十字型切込みによる円偏波パッチアンテナの小型化

    坂本秀一, 藤森和博, *佐薙稔, 野木茂次

    電子情報通信学会技術研究報告, 104巻203号, 講演番号A・P2004-110,87頁-92頁  2004 

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    Event date: 2004.7.23

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  • 同軸-コニカル-ラジアル線路変換部を持つ広帯域な電力分割/合成器

    江國純範, *佐薙稔, 田中恵祐, 藤森和博, 野木茂次

    電子情報通信学会技術研究報告, 104巻46号, 講演番号MW2004-27,65頁-71頁  2004 

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    Event date: 2004.5.14

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  • マイクロストリップ線路プローブを用いた進行波型電力分割器

    *佐薙稔, 江國純範, 藤森和博, 野木茂次

    電子情報通信学会2004年総合大会エレクトロニクス講演論文集1,講演番号C-2-65, 100頁  2004 

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    Event date: 2004.3.22

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  • 同軸-コニカル-ラジアル線路変換部を持つ多分岐電力分割器の広帯域設計

    江國純範, *佐薙稔, 藤森和博, 野木茂次

    電子情報通信学会2004年総合大会エレクトロニクス講演論文集1,講演番号C-2-66, 101頁  2004 

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    Event date: 2004.3.22

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  • 小電力受電レクテナ用整流回路の高効率化

    植田雄祐, 藤森和博, 野木茂次, *佐薙稔

    電子情報通信学会2004年総合大会通信講演論文集1,講演番号SBC-1-9, S-17頁-S-18頁  2004 

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    Event date: 2004.3.22

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  • マイクロストリッププローブと導体棒を持つ広帯域な進行波型導波管電力分配/合成器

    電子情報通信学会技術研究報告, 118巻61号, 講演番号MW2018-12, 13頁-18頁  2018 

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  • エンドランチャ型導波管電力4分配/合成器の設計

    電子情報通信学会2018年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-33, 48頁  2018 

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  • 方形導波管中に挿入したマイクロストリッププローブ対を持つ広帯域な進行波型電力分配器の設計

    電子情報通信学会2018年総合大会エレクトロニクス講演論文集1, 講演番号C-2-73, 87頁  2018 

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  • 複数の導体棒で分配比を制御する小型の導波管型電力分配器

    電子情報通信学会技術研究報告, 116巻486号, 講演番号MW2016-194, 35頁-40頁  2017 

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  • 方形導波管中に挿入したマイクロストリッププローブ対を持つ広帯域な進行波型電力分配器

    電子情報通信学会技術研究報告, 117巻34号, 講演番号MW2017-13, 31頁-36頁  2017 

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  • コレクタ接地で用いたパッケージ化バイポーラトランジスタの負性抵抗特性

    電子情報通信学会2017年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-18, 26頁  2017 

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  • マイクロ波エンドランチャ型導波管2電力分配/合成器の設計

    第19回IEEE広島支部学生シンポジウム論文集, B1-6, 165頁-168頁  2017 

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  • コレクタ接地されたバイポーラトランジスタを用いた負性抵抗発振器

    電子情報通信学会2016年エレクトロニクスソサイエティ大会エレクトロニクス講演論文集1, 講演番号C-2-27, 37頁  2016 

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  • 局部発振信号の高調波処理による高調波ミクサの高利得化

    電子情報通信学会2013年総合大会エレクトロニクス講演論文集1,講演番号C-2-20, 51頁  2013 

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Awards

  • 電気学会論文発表賞B

    1998  

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    Country:Japan

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  • 1997年アジア太平洋マイクロ波会議論文賞(APMC''97 Prize)

    1997  

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  • Transmission Line Theory (2020academic year) Fourth semester  - 月3,月4,木7,木8

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  • Basic Physics (Electromagnetics) 2 (2020academic year) Fourth semester  - 金3,金4

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  • Basic Physics 2(Electromagnetics and DC Electric Circuits) (2020academic year) 3rd and 4th semester  - 金3,金4

  • Basic Physics 2(Electromagnetics and DC Electric Circuits) (2020academic year) 3rd and 4th semester  - 金3,金4

  • Basic Physics 2(Electromagnetics and DC Electric Circuits) (2020academic year) 3rd and 4th semester  - 金3,金4

  • Basic Physics 2(Electromagnetics and DC Electric Circuits) (2020academic year) 3rd and 4th semester  - 金3,金4

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