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Paper Abstract and Keywords
Presentation 2026-01-23 14:10
[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) AP2025-207 WPT2025-54
Abstract (in Japanese) (See Japanese page) 
(in English) In Japan, wireless power transfer using microwaves has recently been institutionalized as a type of premises radio station, and its adoption is steadily progressing. As this trend continues, there is growing anticipation for future applications that include power supply to consumer devices in more familiar environments. On the other hand, implementing power transfer for consumer devices requires careful consideration of product design constraints, such as power transfer capability, device size, and interference mitigation. To address these challenges, the maturation of 24 GHz-band wireless power transfer technology—capable of delivering practical power through near-field focusing—is highly anticipated. While the power transmission capabilities of 24 GHz-band wireless power transfer can be theoretically estimated, this paper focuses on the practical requirements for receiving antennas. In particular, it explores the design considerations and performance demands necessary for effective power reception. Based on these considerations, the paper presents the results of a prototype evaluation involving an actual rectifier connection. Furthermore, it demonstrates that even a simple face-to-face arrangement of the receiver and transmitter can yield practical levels of power.
Keyword (in Japanese) (See Japanese page) 
(in English) Antenna / Wireless Power Transfer / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 318, AP2025-207, pp. 150-155, Jan. 2026.
Paper # AP2025-207 
Date of Issue 2026-01-14 (AP, 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 AP2025-207 WPT2025-54

Conference Information
Committee AP WPT  
Conference Date 2026-01-21 - 2026-01-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Amami City Aiai Hiroba 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Radio propagation, Wireless transmission technology, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2026-01-AP-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of 24GHz RF Beam Wireless Power Transfer 
Sub Title (in English) Loop-Shaped Rectenna Development and WPT test 
Keyword(1) Antenna  
Keyword(2) Wireless Power Transfer  
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1st Author's Name Yukio Kaneko  
1st Author's Affiliation Sony Corporation (Sony)
2nd Author's Name Takanori Okamura  
2nd Author's Affiliation Sony Corporation (Sony)
3rd Author's Name Takashi Kawamura  
3rd Author's Affiliation Sony Corporation (Sony)
4th Author's Name Susumu Miura  
4th Author's Affiliation DKK Co., Ltd. (DKK)
5th Author's Name Noboru Sekino  
5th Author's Affiliation DKK Co., Ltd. (DKK)
6th Author's Name Kenji Itoh  
6th Author's Affiliation Kanazawa Institute of Technology (KIT)
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Speaker Author-1 
Date Time 2026-01-23 14:10:00 
Presentation Time 20 minutes 
Registration for AP 
Paper # AP2025-207, WPT2025-54 
Volume (vol) vol.125 
Number (no) no.318(AP), no.319(WPT) 
Page pp.150-155(AP), pp.81-86(WPT) 
#Pages 6 
Date of Issue 2026-01-14 (AP, WPT) 

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