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Paper Abstract and Keywords
Presentation 2026-03-02 15:05
Development of a 100W-class wireless power transmission system
Tomu Matsutomo, Yamato Nishida, Naoki Warigai (SUS), Shinnosuke Sano, Yumi Kawai (Hosei Univ), Junichi Sawada, Akihiro Masukura, Eriko Soma, Mitsuhiro Nakadai, Tatsuhito Fujita (JAXA), Masahide Oshima (SUS), Kohi Tanaka (JAXA) WPT2025-68
Abstract (in Japanese) (See Japanese page) 
(in English) As a technology demonstration, we are developing a 100W-class wireless power transmission (WPT) system that can operate at power density levels expected in practical SPS applications. This system employs a software retrodirective method for beam control and the. A phase monopulse method was adopted as the arrival direction detection method, and its accuracy under different transmission direction conditions was evaluated. Furthermore, an amplitude control function was implemented in a 100W-class WPT system. A digital step attenuator (DSA) was adopted for amplitude control. This paper describes the experimental results and operational verification of this system.
Keyword (in Japanese) (See Japanese page) 
(in English) SPS / Retrodirective / Phase monopulse Method / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 373, WPT2025-68, pp. 57-62, March 2026.
Paper # WPT2025-68 
Date of Issue 2026-02-23 (WPT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF WPT2025-68

Conference Information
Committee WPT  
Conference Date 2026-03-02 - 2026-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. (Uji Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) SSPS Technology, Wireless Power Transfer, etc 
Paper Information
Registration To WPT 
Conference Code 2026-03-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of a 100W-class wireless power transmission system 
Sub Title (in English)  
Keyword(1) SPS  
Keyword(2) Retrodirective  
Keyword(3) Phase monopulse Method  
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1st Author's Name Tomu Matsutomo  
1st Author's Affiliation Suwa University of Science (SUS)
2nd Author's Name Yamato Nishida  
2nd Author's Affiliation Suwa University of Science (SUS)
3rd Author's Name Naoki Warigai  
3rd Author's Affiliation Suwa University of Science (SUS)
4th Author's Name Shinnosuke Sano  
4th Author's Affiliation Hosei University (Hosei Univ)
5th Author's Name Yumi Kawai  
5th Author's Affiliation Hosei University (Hosei Univ)
6th Author's Name Junichi Sawada  
6th Author's Affiliation Japan aerospace exploration Agency (JAXA)
7th Author's Name Akihiro Masukura  
7th Author's Affiliation Japan aerospace exploration Agency (JAXA)
8th Author's Name Eriko Soma  
8th Author's Affiliation Japan aerospace exploration Agency (JAXA)
9th Author's Name Mitsuhiro Nakadai  
9th Author's Affiliation Japan aerospace exploration Agency (JAXA)
10th Author's Name Tatsuhito Fujita  
10th Author's Affiliation Japan aerospace exploration Agency (JAXA)
11th Author's Name Masahide Oshima  
11th Author's Affiliation Suwa University of Science (SUS)
12th Author's Name Kohi Tanaka  
12th Author's Affiliation Japan aerospace exploration Agency (JAXA)
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Speaker Author-1 
Date Time 2026-03-02 15:05:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2025-68 
Volume (vol) vol.125 
Number (no) no.373 
Page pp.57-62 
#Pages 6 
Date of Issue 2026-02-23 (WPT) 

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