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Paper Abstract and Keywords
Presentation 2012-04-19 13:25
Implementation and validation of hybrid MoM-FDTD method for analysis of composite structure including inhomogeneous objects
Jerdvisanop Chakarothai, Jianqing Wang, Osamu Fujiwara (NIT), Kanako Wake, Soichi Watanabe (NICT) AP2012-7
Abstract (in Japanese) (See Japanese page) 
(in English) The finite-difference time-domain (FDTD) method is a powerful numerical technique for analyzing a model including complex inhomogeneous objects in time domain. However, when the model includes a high-Q resonant cavity, such as a shielding box or a metal chamber, the FDTD method becomes inefficient because of its poor convergence. In this paper, a hybrid method combining the method of moments (MoM) and the FDTD method is proposed for analyzing composite structures including inhomogeneous objects. The hybrid MoM-FDTD method is first derived from Poggio-Miller- Chang-Harrington-Wu-Tsai (PMCHWT) formulation for composite structures. Hybridization of the MoM and FDTD methods is performed via the equivalence principle. The validity has been demonstrated by calculating the electric field distributions in dielectric sphere placed inside an open cavity. The electric fields are calculated by the MoM-FDTD method and compared with those obtained from the FDTD method. Then the MoM-FDTD method is used to analyze a model of a rat placed inside a reverberation chamber. Finally, the results of the whole-body average specific absorption rate (WBA-SAR) of rat at arbitrary locations inside the reverberation chamber demonstrate effectiveness of the proposed hybrid MoM-FDTD method.
Keyword (in Japanese) (See Japanese page) 
(in English) method of moments / finite-difference time-domain method / hybrid method / MoM / FDTD / PMCHWT formulation / specific absorption rate / reverberation chamber  
Reference Info. IEICE Tech. Rep., vol. 112, no. 7, AP2012-7, pp. 33-38, April 2012.
Paper # AP2012-7 
Date of Issue 2012-04-12 (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)
Download PDF AP2012-7

Conference Information
Committee AP  
Conference Date 2012-04-19 - 2012-04-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To AP 
Conference Code 2012-04-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Implementation and validation of hybrid MoM-FDTD method for analysis of composite structure including inhomogeneous objects 
Sub Title (in English)  
Keyword(1) method of moments  
Keyword(2) finite-difference time-domain method  
Keyword(3) hybrid method  
Keyword(4) MoM  
Keyword(5) FDTD  
Keyword(6) PMCHWT formulation  
Keyword(7) specific absorption rate  
Keyword(8) reverberation chamber  
1st Author's Name Jerdvisanop Chakarothai  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Jianqing Wang  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Osamu Fujiwara  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Kanako Wake  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Soichi Watanabe  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2012-04-19 13:25:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2012-7 
Volume (vol) vol.112 
Number (no) no.7 
Page pp.33-38 
#Pages 6 
Date of Issue 2012-04-12 (AP) 

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