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Paper Abstract and Keywords
Presentation 2025-06-27 13:20
[Invited Lecture] GaN Power Amplifiers for Far-field Wireless Power Transfer
Keigo Nakatani, Yutaro Yamaguchi, Akihito Hirai, Koji Yamanaka (Mitsubishi Electric) WPT2025-12
Abstract (in Japanese) (See Japanese page) 
(in English) The far-field wireless power transfer has attracted attention as a technology capable of efficiently delivering power over long distances. It is expected to play a significant role not only in powering the rapidly growing number of small IoT devices but also in supplying energy to new platforms such as drones and high-altitude platform stations (HAPS). Moreover, its potential applications extend to space development, including space solar power systems (SSPS), as well as rovers for Mars and lunar exploration. In this report, we present the design and measurement results of two types of highly efficient gallium nitride (GaN) amplifiers. The first is an ultra-high-efficiency GaN power amplifier operating in the 5.8 GHz band for SSPS applications. The second is a compact, high-efficiency GaN monolithic microwave integrated circuit (MMIC) amplifier operating in the 24 GHz band.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless Power Transfer / Space Solar Power Systems / GaN amplifier / High efficiency / Miniaturization / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 90, WPT2025-12, pp. 16-20, June 2025.
Paper # WPT2025-12 
Date of Issue 2025-06-20 (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 WPT2025-12

Conference Information
Committee WPT  
Conference Date 2025-06-27 - 2025-06-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyakojima Future Creation Center Central Community Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2025-06-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) GaN Power Amplifiers for Far-field Wireless Power Transfer 
Sub Title (in English)  
Keyword(1) Wireless Power Transfer  
Keyword(2) Space Solar Power Systems  
Keyword(3) GaN amplifier  
Keyword(4) High efficiency  
Keyword(5) Miniaturization  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Keigo Nakatani  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Yutaro Yamaguchi  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Akihito Hirai  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Koji Yamanaka  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Speaker Author-1 
Date Time 2025-06-27 13:20:00 
Presentation Time 25 minutes 
Registration for WPT 
Paper # WPT2025-12 
Volume (vol) vol.125 
Number (no) no.90 
Page pp.16-20 
#Pages 5 
Date of Issue 2025-06-20 (WPT) 

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