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Paper Abstract and Keywords
Presentation 2015-07-07 14:30
Automatic Impedance Matching Technique by Using Air-Variable Capacitor for 6.78MHz-Band WPT System
Teruhiko Yamamoto, Keisuke Mikami (Ryukoku Univ.), Tetsuya Ishida (Wave Technology), Toshio Ishizaki (Ryukoku Univ.) WPT2015-42
Abstract (in Japanese) (See Japanese page) 
(in English) For practical application of WPT, it is necessary to reduce a mismatch loss when relative positions of resonators are changed. To reduce the mismatch loss, the authors propose a novel system comprising C-coupled balun and automatic impedance matching technique. In the paper, comparison between C-coupled balun and M-coupled method using loop coil is described. Further, it is shown that mismatch loss of WPT system can be reduced by C-coupled balun, the capacitances of which are controlled by automatic impedance matching circuit. An experimental system equipped with C-coupled balun comprising air-variable capacitors and automatic impedance matching circuit was fabricated. The effectiveness was confirmed by experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) C-Coupled Balun / Automatic Impedance Matching / Class-D Power Supply / Wireless Power Transfer / Resonator / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 129, WPT2015-42, pp. 37-42, July 2015.
Paper # WPT2015-42 
Date of Issue 2015-06-29 (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 EE WPT IEE-SPC  
Conference Date 2015-07-06 - 2015-07-07 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WPT 
Conference Code 2015-07-EE-WPT-SPC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Automatic Impedance Matching Technique by Using Air-Variable Capacitor for 6.78MHz-Band WPT System 
Sub Title (in English)  
Keyword(1) C-Coupled Balun  
Keyword(2) Automatic Impedance Matching  
Keyword(3) Class-D Power Supply  
Keyword(4) Wireless Power Transfer  
Keyword(5) Resonator  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Teruhiko Yamamoto  
1st Author's Affiliation Ryukoku University (Ryukoku Univ.)
2nd Author's Name Keisuke Mikami  
2nd Author's Affiliation Ryukoku University (Ryukoku Univ.)
3rd Author's Name Tetsuya Ishida  
3rd Author's Affiliation Wave Technology Inc. (Wave Technology)
4th Author's Name Toshio Ishizaki  
4th Author's Affiliation Ryukoku University (Ryukoku Univ.)
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Speaker Author-1 
Date Time 2015-07-07 14:30:00 
Presentation Time 30 minutes 
Registration for WPT 
Paper # WPT2015-42 
Volume (vol) vol.115 
Number (no) no.129 
Page pp.37-42 
#Pages 6 
Date of Issue 2015-06-29 (WPT) 

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