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Paper Abstract and Keywords
Presentation 2009-09-03 13:50
A Consideration on Transmission Efficiency Characteristics of Wireless Power Transmission Using Proximity Coils
Yosuke Hiraiwa, Nobuyoshi Kikuma, Hiroshi Hirayama, Kunio Sakakibara (Nagoya Inst. of Tech.) AP2009-86
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, the technology of wireless power transmission attracts attention, and the researches are actively
carried on which aim at its applications in various fields such as cellular phones and electric vehicles. As one
technology, the method of using the induced magnetic field of the loop antenna (coil) is examined. This research
topic includes the clarification of the relation between the characteristics of the antennas used and the optimum
transmission distance. In this report, the distance characteristics of the transmission efficiency between two proximity
coils are analyzed by using electromagnetic numerical analysis software (FEKO), and the optimum transmission
distances for several kinds of coils with different number of turns are calculated. Moreover, the cause of decrease
in transmission efficiency is clarified through the analysis of frequency characteristics. In addition, the equivalent
circuit of two-coil transmission system is constructed for understanding the wireless power transmission mechanism
and also for investigating the possibility of a simple design of the system. As a result, it is confirmed that the
transmission efficiency characteristics of the equivalent circuit are in fairly good agreement with those obtained by
FEKO.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless Power Transmission / Proximity Coils / Transmission Efficiency / Distance Characteristics / Frequency Characteristics / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 183, AP2009-86, pp. 41-46, Sept. 2009.
Paper # AP2009-86 
Date of Issue 2009-08-27 (AP) 
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 AP  
Conference Date 2009-09-03 - 2009-09-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Hachinohe Inst. of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) AP 
Paper Information
Registration To AP 
Conference Code 2009-09-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Consideration on Transmission Efficiency Characteristics of Wireless Power Transmission Using Proximity Coils 
Sub Title (in English)  
Keyword(1) Wireless Power Transmission  
Keyword(2) Proximity Coils  
Keyword(3) Transmission Efficiency  
Keyword(4) Distance Characteristics  
Keyword(5) Frequency Characteristics  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yosuke Hiraiwa  
1st Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
2nd Author's Name Nobuyoshi Kikuma  
2nd Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
3rd Author's Name Hiroshi Hirayama  
3rd Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
4th Author's Name Kunio Sakakibara  
4th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
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Speaker Author-1 
Date Time 2009-09-03 13:50:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2009-86 
Volume (vol) vol.109 
Number (no) no.183 
Page pp.41-46 
#Pages 6 
Date of Issue 2009-08-27 (AP) 

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