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Paper Abstract and Keywords
Presentation 2021-01-21 14:05
Development of the FDTD method for the analysis of arbitrarily-shaped dispersive media
Jun Shibayama, Tetsuya Iwamoto, Junji Yamauchi, Hisamatsu Nakano (Hosei Univ.) EST2020-59
Abstract (in Japanese) (See Japanese page) 
(in English) With the fi nite-difference time-domain (FDTD) method in the Cartesian coordinate system, the staircase approximation should be used for the analysis of a cylindrical structure consisting of dispersive media. Unfortunately, this gives rise to spurious errors along the cylinder surface. Although these errors can be reduced with a small mesh size, the computational time and memory become enormous. The purpose of this article is to develop the FDTD method based on the trapezoidal recursive convolution (TRC) technique, in which the dispersive contour-path (DCP) algorithm is introduced for the analysis of arbitarily-shaped dispersive media. First, we show the FDTD formulations with the DCP algorithm. Next, we newly formulate the method for the analysis of a periodic structure at oblique incidence. The DCP algorithm is applied to the TRC-FDTD method with a split- field scheme. Finally, we analyze a metal cylinder array using the DCP-TRC-FDTD method. It is found that a larger mesh size can be used, in which the computational time and memory are respectively reduced to less than 1% and 50% of the explicit counterparts.
Keyword (in Japanese) (See Japanese page) 
(in English) Finite-difference time-domain (FDTD) method / Dispersive contour-path (DCP) algorithm / Periodic boundary condition (PBC) / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 328, EST2020-59, pp. 34-38, Jan. 2021.
Paper # EST2020-59 
Date of Issue 2021-01-14 (EST) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EST2020-59

Conference Information
Committee EST  
Conference Date 2021-01-21 - 2021-01-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EST 
Conference Code 2021-01-EST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of the FDTD method for the analysis of arbitrarily-shaped dispersive media 
Sub Title (in English)  
Keyword(1) Finite-difference time-domain (FDTD) method  
Keyword(2) Dispersive contour-path (DCP) algorithm  
Keyword(3) Periodic boundary condition (PBC)  
1st Author's Name Jun Shibayama  
1st Author's Affiliation Hosei University (Hosei Univ.)
2nd Author's Name Tetsuya Iwamoto  
2nd Author's Affiliation Hosei University (Hosei Univ.)
3rd Author's Name Junji Yamauchi  
3rd Author's Affiliation Hosei University (Hosei Univ.)
4th Author's Name Hisamatsu Nakano  
4th Author's Affiliation Hosei University (Hosei Univ.)
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Date Time 2021-01-21 14:05:00 
Presentation Time 25 
Registration for EST 
Paper # IEICE-EST2020-59 
Volume (vol) IEICE-120 
Number (no) no.328 
Page pp.34-38 
#Pages IEICE-5 
Date of Issue IEICE-EST-2021-01-14 

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