Updated on 2026/09/18

写真a

 
Akada Takuma
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Special-Appointment Assistant Professor
Position
Special-Appointment Assistant Professor
External link

Degree

  • 博士（工学） ( 2026.3 )

 

Papers

  • Spatial Sensitivity Maps for Post-Design Robustness in GA-Optimized Microwave Circuits via Cross-Run SHAP Analysis Reviewed

    Takuma Akada, Kazuhiro Fujimori

    2026 56th European Microwave Conference (EuMC)   2026.10

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

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  • Development and Experimental Validation of an SDR-Based Near-Field Measurement System for 5G mmWave Antennas Reviewed

    Kazuha Ito, Yuhi Akiyama, Takuma Akada, Kazuhiro Fujimori, Toshiyasu Tanaka

    2026 56th European Microwave Conference (EuMC)   2026.10

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

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  • A Survey on Rectenna Technologies for Wireless Power Transfer and RF Energy Harvesting Invited Reviewed

    FUJIMORI Kazuhiro, AKADA Takuma, YAMAMOTO Tsunayuki

    J109-B ( 9 )   513 - 525   2026

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

    DOI： 10.82737/transcomj.2025wpi0017

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  • Accelerating Genetic Algorithm for Microwave Planar Structure Design Automation using Image Features and LightGBM Reviewed

    AKADA Takuma, TAKAYAMA Yuta, FUJIMORI Kazuhiro

    IEICE Transactions on Electronics   advpub   2026

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

    In recent years, wireless power transmission and energy harvesting have gained significant attention for powering self-sustaining or battery-less devices, such as wireless sensors. These systems require microwave planar circuits that often incorporate nonlinear elements, making their design complex and computationally intensive. To address these challenges, automated design using Genetic Algorithms (GA) has been widely explored. However, the requirement for repetitive electromagnetic field analysis during fitness evaluation remains a major computational bottleneck. This study focuses on the inherent nature of GA, where high population diversity results in numerous individuals with low fitness. Since these unpromising individuals have a low probability of survival, their detailed evaluation can be omitted to save computational resources. We propose an accelerated GA framework that integrates image processing for feature extraction from circuit patterns and a LightGBM-based machine learning model for rapid classification. The proposed LightGBM-assisted GA reduced the total number of fitness calculations by approximately 86% compared to conventional GA-only methods, without sacrificing the quality of the final design.

    DOI： 10.1587/transele.2025esp0007

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  • Measurement of 28GHz mmWave Band Antennas by Near-Field Measurement System Composed Using SDR Reviewed

    Kazuha Ito, Yuhi Akiyama, Takuma Akada, Kazuhiro Fujimori, Toshiyasu Tanaka

    Progress In Electromagnetics Research Symposium 2025   2025.11

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  • Efficient Microwave Planner Circuit Design through LightGBM-accelerated Genetic Optimization Reviewed

    Takuma Akada, Yuta Takayama, Kazuhiro Fujimori

    Progress In Electromagnetics Research Symposium 2025   2025.11

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    Authorship：Lead author  

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  • Parameter Reduction of Acceleration Framework for Automatic Circuit Design with GA Reviewed

    Yuta Takayama, Takuma Akada, Kazuhiro Fujimori

    International Symposium on Antennas and Propagation 2025,   2025.10

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    Language：English  

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  • Accelerating Automated Microwave Planar Circuit Design Using Population-Based Metaheuristics with Models Addressing Data Drift Reviewed

    Yuta Takayama, Takuma Akada, Kazuhiro Fujimori

    2025 55th European Microwave Conference (EuMC)   2025.9

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

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  • A Proposal of Near-Field Measurement System Using Software Defined Radio for 5G Antenna Pattern Measurement Reviewed

    Takuma Akada, Shu Takahashi, Kazuhiro Fujimori, Toshiyasu Tanaka

    2025 19th European Conference on Antennas and Propagation (EuCAP)   1 - 4   2025.3

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    Authorship：Lead author   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.23919/eucap63536.2025.11000015

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  • Analysis of Circuit Geometry Contribution and Optimization Method Based on the Area Importance using LightGBM for Automatic Design of Microwave Planner Circuits using Genetic Algorithm

    AKADA Takuma, TAKAYAMA Yuta, FUJIMORI Kazuhiro

    Asian Wireless Power Transfer Workshop 2024   2024.12

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    Authorship：Lead author  

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  • A Secure Authentication for Plant Monitoring System Sensor Data Access

    Samsul Huda, Yasuyuki Nogami, Md. Biplob Hossain, Yang Jie, Le Hoang Anh, Muhammad Bisri Musthafa, Maya Rahayu, Takuma Akada

    2024 IEEE International Conference on Consumer Electronics (ICCE)   1 - 2   2024.1

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    Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/icce59016.2024.10444465

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  • IoT-Enabled Plant Monitoring System with Power Optimization and Secure Authentication

    Samsul Huda, Yasuyuki Nogami, Maya Rahayu, Takuma Akada, Md Biplob Hossain, Muhammad Bisri Musthafa, Yang Jie, Le Hoang Anh

    Computers, Materials and Continua   81 ( 2 )   3165 - 3187   2024

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.32604/cmc.2024.058144

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  • A Proposal of IoT Application for Plant Monitoring System with AWS Cloud Service.

    Samsul Huda, Yasuyuki Nogami, Takuma Akada, Maya Rahayu, Md. Biplob Hossain, Muhammad Bisri Musthafa, Le Hoang Anh, Yang Jie

    SmartNets   1 - 5   2023

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    Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/SmartNets58706.2023.10215620

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    Other Link： https://dblp.uni-trier.de/db/conf/smartnets/smartnets2023.html#HudaNARHMAJ23

  • A study on an online acceleration of automatic design of RF-DC conversion circuit using neural networks Reviewed

    Takuma Akada, Kazuhiro Fujimori

    2020 International Symposium on Antennas and Propagation (ISAP)   2021.1

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    Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.23919/isap47053.2021.9391324

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  • Designing Microwave Circuits Using Genetic Algorithms Accelerated by Convolutional Neural Networks Reviewed

    Takuma Akada, Kazuhiro Fujimori

    2020 50th European Microwave Conference (EuMC)   290 - 293   2021.1

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    Authorship：Lead author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.23919/eumc48046.2021.9337992

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MISC

  • 遺伝的アルゴリズムを用いた回路自動設計高速化手法のフィルタへの応用

    上山 憲亮, 髙山 悠太, 赤田 拓磨, 藤森 和博

    2025年度 (第76回) 電気・情報関連学会中国支部連合大会 講演論文集   2025.10

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    Publishing type：Research paper, summary (national, other academic conference)  

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  • LPWAによる山林内源流域における流量計測とリアルタイム流量予測モデルの検討

    岡創史, 湊晴翔, 伊藤一葉, 赤田拓磨, 藤森和博

    2025.10

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    Publishing type：Research paper, summary (national, other academic conference)  

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  • 28GHz帯ホーンアンテナのSDRを用いた近傍界測定

    秋山 湧飛, 伊藤, 一葉, 赤田, 拓磨, 藤森, 和博, 田中 稔泰

    電子情報通信学会 ソサイエティ大会   2025.9

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  • 森林の水源涵養機能をリモートモニタリングするLPWAネットワークシステムの構築

    三宅 純平, 伊藤, 一葉, 赤田, 拓磨, 藤森 和博

    電子情報通信学会 ソサイエティ大会   2025.9

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  • 回路画像の多段階領域分割に基づく特徴抽出手法と分類性能の評価

    髙山 悠太, 赤田, 拓磨, 藤森 和博

    電子情報通信学会 ソサイエティ大会   2024.9

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  • 遺伝的アルゴリズムを用いた回路自動設計におけるデータドリフトに対応した適応度推定モデル生成の効果—Effects of Fitness Estimation Model Generation Corresponding to Data Drift in Automatic Circuit Design Using Genetic Algorithm—電磁界理論研究会・光・電波ワークショップ

    髙山 悠太, 赤田 拓磨, 藤森 和博

    電気学会研究会資料. EMT = The papers of technical meeting on electromagnetic theory, IEE Japan / 電磁界理論研究会 [編]   2024 ( 30-57 )   71 - 76   2024.7

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    Language：Japanese   Publisher：東京 : 電気学会  

    CiNii Books

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    Other Link： https://ndlsearch.ndl.go.jp/books/R000000004-I033658244

  • Selection of an adaptivity estimation model using AutoML for automatic planar circuit design using genetic algorithms and consideration of the contribution of features

    赤田拓磨, 高山悠太, 藤森和博

    電子情報通信学会大会講演論文集(CD-ROM)   2024   2024

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  • マイクロ波回路の決定木を用いた特性推定及び回路形状最適化アルゴリズムへの適用手法の検討

    赤田 拓磨, 高山 悠太, 藤森 和博

    2023年度 (第74回) 電気・情報関連学会中国支部連合大会   2023.10

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  • GA と CNN を用いた平面回路自動設計における適応度推定モデルの学習方法に関する検討

    赤田拓磨, 藤森和博

    2020年度 (第71回) 電気・情報関連学会中国支部連合大会   2020.10

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    Language：Japanese  

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  • マイクロ波回路の自動設計におけるCNNを用いた冗長な特性計算の排除

    赤田拓磨, 藤森和博

    第21回 IEEE 広島支部学生シンポジウム   2019.11

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    Language：Japanese  

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  • マイクロ波回路の自動設計におけるCNNによる解探索効率の向上

    赤田拓磨, 藤森和博

    電子情報通信学会 ソサイエティ大会   2019.9

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    Language：Japanese  

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  • 遺伝的アルゴリズムを用いた自動設計手法によるRF-DC変換回路の高効率動作条件の探索

    赤田拓磨, 藤森和博

    電子情報通信学会 無線電力伝送研究会   2019.6

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    Language：Japanese  

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Awards

  • Best Student Presentation Awards : 3rd Prize

    2025.11   Progress In Electromagnetics Research Symposium 2025   Measurement of 28GHz mmWave Band Antennas by Near-field Measurement System Composed Using SDR

    Kazuha Ito , Yuhi Akiyama , Takuma Akada , Kazuhiro Fujimori , Toshiyasu Tanaka

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  • Best Student Presentation Awards : 2nd Prize

    2025.11   Progress In Electromagnetics Research Symposium 2025   Efficient Microwave Planner Circuit Design through LightGBM-accelerated Genetic Optimization

    Takuma Akada, Yuta Takayama, Kazuhiro Fujimori

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  • Best Student Award, Okayama University R&D Showcase

    2024.12   Okayama University  

    Takuma Akada, Kazuhiro Fujimori

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  • 2024 Asian Wireless Power Transfer Workshop Student Award

    2024.12   Asian Wireless Power Transfer Workshop 2024   Analysis of Circuit Geometry Contribution and Optimization Method Based on the Area Importance using LightGBM for Automatic Design of Microwave Planner Circuits using Genetic Algorithm

    Takuma Akada, Yuta Takyama, Kazuhiro Fujimori

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  • ISAP 2020 Student Design Contest Judgesʼ Special Award

    2021.1   ISAP 2020 Student Design Contest Committee   The Future is Just an Image of an Original

    Takuma Akada, Yusuke Maruyama, Kensuke Kobayashi, Yuta Kawabuchi

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  • 2019 年度（第21 回）IEEE 広島支部学生シンポジウム HISS 優秀研究賞

    2019.11   IEEE 広島支部   マイクロ波回路の自動設計におけるCNNを用いた冗長な特性計算の排除

    赤田 拓磨 藤森 和博

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  • アプリ作品部門2019 最優秀・総務省中国通信局局長賞

    2019.10   フレッシュITあわ～ど2019   マンホールファクトリー

    赤田 拓磨, 橋本 律紀

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Research Projects

  • Proposal of an Optimization Design Method for a Circular Horn Antenna for UAV-Based Wireless Power Transfer

    Grant number：JPMJFS2128  2023.10 - 2025.09

    Japan Science and Technology Agency  Support for Pioneering Research Initiated by the Next Generation (SPRING) 

    Takuma Akada

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    Authorship：Principal investigator  Grant type：Competitive

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Social Activities