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Paper Abstract and Keywords
Presentation 2007-09-21 13:25
Exposure assessment of a human-body communication system with electric field coupling with body
Masao Taki, Yukihisa Suzuki, Kyouhei Watanabe (Tokyo Metro. Univ.) EMCJ2007-47
Abstract (in Japanese) (See Japanese page) 
(in English) We analysed numerically a capacitive coupling signal transmission system in the
viewpoint of bioelectromagnetics. We examined the characteristics of electromagnetic fields,
and investigated the conformity with the exposure safety guidelines in terms of induced current density
and specific absorption rate (SAR) in the body. The frequency was assumed 5 MHz and FDTD method was used
for numerical calculations. The results showed that the electromagnetic fields are quasi-static, and
human model was equivalent to a conducting object with constant potential at any part of the body. An equivalent circuit model was derived based on these properties of the results. The results of exposure assessment showed that exposure was well below the ICNIRP guidelines. Induced current limited the applied voltage and maximum permissible applied voltage would be 300 V or grater for an electrode with 50 mm square paralell palate with 10 mm interval located at 5 mm from the body. The local SAR in the body was also shown far less than the basic restriction.
Keyword (in Japanese) (See Japanese page) 
(in English) human communication / exposure / guideline / electric field coupling / safety / SAR / induced current /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 226, EMCJ2007-47, pp. 25-30, Sept. 2007.
Paper # EMCJ2007-47 
Date of Issue 2007-09-14 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 EMCJ  
Conference Date 2007-09-21 - 2007-09-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Doshisha University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2007-09-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Exposure assessment of a human-body communication system with electric field coupling with body 
Sub Title (in English)  
Keyword(1) human communication  
Keyword(2) exposure  
Keyword(3) guideline  
Keyword(4) electric field coupling  
Keyword(5) safety  
Keyword(6) SAR  
Keyword(7) induced current  
Keyword(8)  
1st Author's Name Masao Taki  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Yukihisa Suzuki  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
3rd Author's Name Kyouhei Watanabe  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker Author-1 
Date Time 2007-09-21 13:25:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2007-47 
Volume (vol) vol.107 
Number (no) no.226 
Page pp.25-30 
#Pages 6 
Date of Issue 2007-09-14 (EMCJ) 

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