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Paper Abstract and Keywords
Presentation 2020-03-06 15:10
FDTD Analysis of Transmission Characteristic for the Various Differential Line Patterns
Masakazu Akahane, Ren Kitahara (NIT Nagano Collage), Taiki Yamagiwa (UEC), Kasuga Takashi (NIT Nagano Collage) EMD2019-66
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, the clock frequency of signals has been used in the GHz band for high-speed processing of large volumes of data such as PCs, smartphones, and information devices, and parallel differential lines have been used for signal wiring. For the parallel lines, meander patterns that bend the wiring to match the wiring length are used. In this study, to create the database of line patter used in board design, the transmission characteristics of meander patterns are analyzed. The model in which the distance between the straight line and the edge of the board is changed, the model in which the number of meanders is changed, and the model in which the number of meanders and the amount of bending are changed are analyzed. The transmission characteristics of the straight line agreed between the experiment and the analysis. When the distance between the line and the board edge is reduced, Sdd21 does not change and Scd21 increased. When comparing the straight line and the meander line, the attenuation of the meander line Sdd21 increases at frequencies higher than 13.5 GHz, and the common mode conversion of the Scd21 increases in all frequency bands. When the number of meanders was increased, the signal attenuation increased. When the bending length of the meanders pattern is increased, the signal attenuation increased.
Keyword (in Japanese) (See Japanese page) 
(in English) Meander patters / Transmission characteristics / FDTD method / Complex permittivity / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 466, EMD2019-66, pp. 37-41, March 2020.
Paper # EMD2019-66 
Date of Issue 2020-02-28 (EMD) 
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)
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Conference Information
Committee EMD  
Conference Date 2020-03-06 - 2020-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) CHIBA Institute of Technology Tsudanuma Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Short NOTE 
Paper Information
Registration To EMD 
Conference Code 2020-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) FDTD Analysis of Transmission Characteristic for the Various Differential Line Patterns 
Sub Title (in English)  
Keyword(1) Meander patters  
Keyword(2) Transmission characteristics  
Keyword(3) FDTD method  
Keyword(4) Complex permittivity  
1st Author's Name Masakazu Akahane  
1st Author's Affiliation National Institute of Technology Nagano College (NIT Nagano Collage)
2nd Author's Name Ren Kitahara  
2nd Author's Affiliation National Institute of Technology Nagano College (NIT Nagano Collage)
3rd Author's Name Taiki Yamagiwa  
3rd Author's Affiliation The University of Electro-Communications (UEC)
4th Author's Name Kasuga Takashi  
4th Author's Affiliation National Institute of Technology Nagano College (NIT Nagano Collage)
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Date Time 2020-03-06 15:10:00 
Presentation Time 15 
Registration for EMD 
Paper # IEICE-EMD2019-66 
Volume (vol) IEICE-119 
Number (no) no.466 
Page pp.37-41 
#Pages IEICE-5 
Date of Issue IEICE-EMD-2020-02-28 

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