IEICE Technical Report

Online edition: ISSN 2432-6380

Wireless Power Transfer

Workshop Date : 2026-01-21 - 2026-01-23 / Issue Date : 2026-01-14

WPT2025-39
Experimental and Numerical Investigation on Output Power of High-Power Rectenna DC Arrays Using Narrow-Width Antenna Elements
Daiki Kono, Eisuke Nishiyama, Ichihiko Toyoda (Saga Univ.)
pp. 1 - 6

WPT2025-40
Fundamental Study on Elliptical Patch Antenna and Its Application to High-Density Array Antennas for High-Power Wireless Power Transfer
Koki Maeda, Eisuke Nisiyama, Ichihiko Toyoda (Saga Univ.)
pp. 7 - 12

WPT2025-41
Fundamental Study on Optimal Design of Transmission-Line-Resonator-Loaded RF-DC Converters Considering Input-Power Dependence
Masaya Ishibashi, Eisuke Nishiyama (Saga Univ.), Teruo Fujiwara, Atushi Kishimoto (Sho Engineering Corp.), Ichihiko Toyoda (Saga Univ.)
pp. 13 - 18

WPT2025-42
A study on Radio Propagation Estimation for Beam Wireless Power Transmission Systems -- Database of Radio Wave Characteristics --
Koji Yamaguchi, Masahiro Hanazawa, Toshiteru Hayashi, Tetsuo Endo (TAISEI), Yukihiro Homma (MELCO), Ryosuke Suga, Osamu Hashimoto (AGU)
pp. 19 - 24

WPT2025-43
A study on Radio Propagation Estimation for Beam Wireless Power Transmission Systems -- Vol.2 Radio Propagation Analysis for Building using Radio Characteristics Database of Building Components --
Toshiteru Hayashi, Koji Yamaguchi, Masahiro Hanazawa, Tetsuo Endo (TAISEI), Yukihiro Honma (Mitsubishi Electric), Ryosuke Suga, Osamu Hashimoto (Aoyama Gakuin)
pp. 25 - 30

WPT2025-44
A study on Radio Propagation Estimation for Beam Wireless Power Transmission Systems -- Part3 Evaluation of Leaked Electromagnetic Fields in Office Buildings --
Tetsuo Endo, Koji Yamaguchi, Masahiro Hanazawa, Toshiteru Hayashi (TAISEI), Yukihiro Homma (MELCO), Ryosuke Suga, Osamu Hashimoto (AGU)
pp. 31 - 35

WPT2025-45
A Study of WPT Roadway System for Running Vehicle based on Capacitive Coupling
Sonshu Sakihara, Tetsuo Endo (Taisei), Akihiro Kuno (Taisei Rotec)
pp. 36 - 39

WPT2025-46
Proposal and Evaluation of a Receive Voltage Estimation Method for Retro-Directive Array Antennas Using Z-Matrix
Qiaowei Yuan (TOHTECH)
pp. 40 - 42

WPT2025-47
Radio Wave Type Estimation Method for Coexistence of Communication and Wireless Power Transfer
Toru Osuga, Taketoshi Nakajima, Fumiko Ohori, Takeshi Matsumura, Satoko Itaya (NICT)
pp. 43 - 47

WPT2025-48
Investigation of Propagation Characteristics of 24 GHz Band Wireless Power Transfer System
Minoru Furukawa, Taketoshi Nakajima, Fumiko Ohori, Takeshi Matsumura, Satoko Itaya (NICT)
pp. 48 - 52

WPT2025-49
Equipment characteristics and propagation characteristics of 24 GHz band power transmission equipment
Noboru Sekino, Susumu Miura (DKK)
pp. 53 - 58

WPT2025-50
[Invited Lecture] Experimental Evaluation of Beamforming Technology Integrating Wireless Sensing and Wireless Power Transfer in Compliance with Radio Exposure Protection Guidelines
Kentaro Murata, Mao Sekine, Shunto Arai, Naoki Honma (Iwate Univ.)
pp. 59 - 64

WPT2025-51
[Invited Lecture] Experimental Evaluation of Microwave Wireless Power Transfer Based on Passive Channel Estimation Method for Multiple Rectennas
Shunto Arai, Kentaro Murata, Naoki Honma (Iwate Univ.)
pp. 65 - 70

WPT2025-52
[Invited Lecture] 2.45 GHz Wireless Power Transfer Using Near-field Focusing 1-Bit Reflectarray Antenna
Shota Sueki, Hajime Kondo, Takuma Shido, Shungo Shimizu, Akira Machida (CEC), Hiroyasu Sato, Qiang Chen (Tohoku Univ.)
pp. 71 - 74

WPT2025-53
[Invited Lecture] Fundamental Study Aimed at Wireless Power Transfer for Sensing Tools in Machining Processes
Takumi Kanamori, Toyohisa Takano, Suguru Yamagishi, Ichirou Kuwayama (SEI), Naoki Sakai, Kenji Itoh (KIT)
pp. 75 - 80

WPT2025-54
[Invited Lecture] A Study of 24GHz RF Beam Wireless Power Transfer -- Loop-Shaped Rectenna Development and WPT test --
Yukio Kaneko, Takanori Okamura, Takashi Kawamura (Sony), Susumu Miura, Noboru Sekino (DKK), Kenji Itoh (KIT)
pp. 81 - 86

WPT2025-55
[Invited Lecture] Interference Mitigating Technique for WPT Systems with Carrier-sense
Yuki Tanaka, Hikaru Hamase (Panasonic)
pp. 87 - 91

WPT2025-56
A Transmit Array Applied to Receiving Power Enhancement in 24 GHz Wireless Power Transfer
Shailendra Kaushal, Yuki Suto (Fujikura), Naoki Sakai, Ryosuke Sato, Kenji Itoh (KIT), Ning Guan (Fujikura)
pp. 92 - 95

WPT2025-57
Intermittent Startup IoT Device by Energy Harvesting with Wi-Fi Communication Radio Waves
Akihiro Imae, Ryouta Shiina, Shinya Tamaki, Satoshi Narikawa (NTT)
pp. 96 - 101

Note: Each article is a technical report without peer review, and its polished version will be published elsewhere.

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan