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Paper Abstract and Keywords
Presentation 2008-09-26 16:45
SAR measurement procedure for simultaneous multi-band transmission assessment and SAR evaluation method for low power transmitter.
Takahiro Iyama, Teruo Onishi (DOCOMO) EMCJ2008-58
Abstract (in Japanese) (See Japanese page) 
(in English) SAR (Specific Absorption Rate) measurement of a radio device that can simultaneously transmits in multi-frequency might be necessary even if the maximum radiated power of one radio system is not over 20 mW. First, we investigated the relationship between probe sensitivity and measurement accuracy based on the standardized procedures. Numerical analysis shows that the SARs on the measurement area closest to the phantom surface generated by reference dipoles are almost over the probe sensitivity of 0.01 W/kg both at 2.45 and 5.2 GHz for the output power of not less than 1 mW. Due to the steep decay in phantom depth, however, differences in 10 g average SAR generated by a reference dipole and a PIFA (Planar Inverted-F Antenna) at 5.2 GHz are -5.2% and -30.2% at 1 mW, respectively. Next, we evaluated the applicability of SAR estimation procedure using the equivalent theorem and the image theory to the SAR measurement of the low power transmitter. It is numerically indicated that our procedure can improve the measurement accuracy corresponding to antenna output power of 4 dB.
Keyword (in Japanese) (See Japanese page) 
(in English) SAR / multi-band transmission / probe sensitivity / FDTD / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 222, EMCJ2008-58, pp. 49-54, Sept. 2008.
Paper # EMCJ2008-58 
Date of Issue 2008-09-19 (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 2008-09-26 - 2008-09-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2008-09-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) SAR measurement procedure for simultaneous multi-band transmission assessment and SAR evaluation method for low power transmitter. 
Sub Title (in English)  
Keyword(1) SAR  
Keyword(2) multi-band transmission  
Keyword(3) probe sensitivity  
Keyword(4) FDTD  
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1st Author's Name Takahiro Iyama  
1st Author's Affiliation NTT DOCOMO, INC. (DOCOMO)
2nd Author's Name Teruo Onishi  
2nd Author's Affiliation NTT DOCOMO, INC. (DOCOMO)
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Speaker Author-1 
Date Time 2008-09-26 16:45:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2008-58 
Volume (vol) vol.108 
Number (no) no.222 
Page pp.49-54 
#Pages 6 
Date of Issue 2008-09-19 (EMCJ) 

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