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Paper Abstract and Keywords
Presentation 2018-03-02 15:30
Improvement of the RF-DC conversion efficiency of rectifiers with pulse modulated input
Takashi Hirakawa, Naoki Shinohara (Kyoto Univ.) WPT2017-75
Abstract (in Japanese) (See Japanese page) 
(in English) Nowadays, the Internet of things (IoT) is attracting our interest. IoT requires a flexible configuration of sensor networks. However, this is hindered by wired-charging sensor. Microwave power transfer (MPT) can be the solution to this problem. MPT interferes with communications and its charging efficiency is lower than the wired charging. The waves, which have high peak-to-average power ratio, are effective in improving the RF-DC conversion efficiency of rectifiers. This study focused on the pulse modulated waves, which have high peak-to-average power ratio. In the MPT with pulse modulated waves, both power and information can be transmitted using time-division multiplexing. In this study, the operation of rectifiers with pulse-modulated input signal is analyzed。We theoret- ically discussed about the RF-DC conversion efficiency of rectifiers with pulse-modulated input and experimented using the fabricated rectifier. We confirmed the consistency of the theoretical and experimental results. As a result, we improve the RF-DC conversion efficiency with low average power input.
Keyword (in Japanese) (See Japanese page) 
(in English) Microwave / Rectifier / Intermittent wave / Pulse modulation / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 466, WPT2017-75, pp. 39-43, March 2018.
Paper # WPT2017-75 
Date of Issue 2018-02-23 (WPT) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee WPT  
Conference Date 2018-03-02 - 2018-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. Uji Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, SPS Technology, etc. 
Paper Information
Registration To WPT 
Conference Code 2018-03-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of the RF-DC conversion efficiency of rectifiers with pulse modulated input 
Sub Title (in English)  
Keyword(1) Microwave  
Keyword(2) Rectifier  
Keyword(3) Intermittent wave  
Keyword(4) Pulse modulation  
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1st Author's Name Takashi Hirakawa  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Naoki Shinohara  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2018-03-02 15:30:00 
Presentation Time 20 minutes 
Registration for WPT 
Paper # WPT2017-75 
Volume (vol) vol.117 
Number (no) no.466 
Page pp.39-43 
#Pages 5 
Date of Issue 2018-02-23 (WPT) 

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