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Paper Abstract and Keywords
Presentation 2012-01-26 09:30
FDTD Evaluation of SAR Characteristics for 3.5-GHz PIFA above EBG Substrate
Shinya Morita, Akimasa Hirata (NIT) PN2011-34 OPE2011-150 LQE2011-136 EST2011-84 MWP2011-52
Abstract (in Japanese) (See Japanese page) 
(in English) As mobile handset that is used in close proximity to the human body are common in modern life, concerns about the health risks from the associated electromagnetic (EM) fields have increased. Safety guidelines for EM wave exposures have been established by international standardization bodies. The electromagnetic band-gap (EBG) structure can suppress surface waves and reduce undesired radiation from an antenna. The present study investigates the performance of a planar inverted F antenna (PIFA) on an EBG substrate to realize a low specific absorption rate (SAR) antenna. The frequency band is 3.5 GHz, which will be assigned for 4th generation mobile communications. The size of EBG substrate is comparable to a wavelength, and thus can be small enough for a handset. The PIFA above the EBG substrate was found to reduce local SAR in a cubic head model by 57% as compared to that without EBG structure. To validate computational results with the FDTD method, a hybrid FEM/MoM method was also used. Although the difference of center frequency was 2.7%, band width was almost identical for both methods.
Keyword (in Japanese) (See Japanese page) 
(in English) specific absorption rate(SAR) / electromagnetic band-gap (EBG) structure / handset terminals / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 415, EST2011-84, pp. 5-9, Jan. 2012.
Paper # EST2011-84 
Date of Issue 2012-01-19 (PN, OPE, LQE, EST, MWP) 
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)
Download PDF PN2011-34 OPE2011-150 LQE2011-136 EST2011-84 MWP2011-52

Conference Information
Committee EMT PN LQE OPE MWP EST IEE-EMT  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photonic integrated circuits and devices, swtiching, PLC, fiber devices, waveguide analysis, and others 
Paper Information
Registration To EST 
Conference Code 2012-01-EMT-PN-LQE-OPE-MWP-EST-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) FDTD Evaluation of SAR Characteristics for 3.5-GHz PIFA above EBG Substrate 
Sub Title (in English)  
Keyword(1) specific absorption rate(SAR)  
Keyword(2) electromagnetic band-gap (EBG) structure  
Keyword(3) handset terminals  
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1st Author's Name Shinya Morita  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Akimasa Hirata  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2012-01-26 09:30:00 
Presentation Time 25 minutes 
Registration for EST 
Paper # PN2011-34, OPE2011-150, LQE2011-136, EST2011-84, MWP2011-52 
Volume (vol) vol.111 
Number (no) no.412(PN), no.413(OPE), no.414(LQE), no.415(EST), no.416(MWP) 
Page pp.5-9 
#Pages 5 
Date of Issue 2012-01-19 (PN, OPE, LQE, EST, MWP) 

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