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Paper Abstract and Keywords
Presentation 2014-09-12 10:30
Investigation of Position to Install a Capacitor to Power Distribution Network for Suppressing Mode Conversion
Toshiki Mikura, Yoshitaka Toyota, Kengo Iokibe (Okayama Univ.) EMCJ2014-32 EST2014-46
Abstract (in Japanese) (See Japanese page) 
(in English) The discontinuity in multiple transmission line, i.e. the change in cross-sectional structure of the trace causes mode conversion. This suggests that normal-mode noise propagation generate common-mode noise by mode-conversion at the discontinuity and then lead to the electromagnetic interference (EMI).
Focusing on power distribution network, rf noise caused by switching in a DC-DC converter is becoming a severe problem and hence it is required to consider how to suppress EMI efficiently.
Mode conversion occurs at the discontinuity in transmission line where
the common-mode electromotive source is excited in proportion to the normal-mode voltage.
Different from the signal trace, a capacitor can be installed to the power distribution network to efficiently reduce normal-mode voltage at high frequency.
In this paper, the distance between the installed capacitor and
the connector where the discontinuity in transmission line occurs are changed to investigate the reduction of the normal-mode voltage in the vicinity of a connector and its relationship with the reductions of common-mode current and far electric field.
As a result, it is found that mode conversion is more suppressed by installing thecapacitor near the connector than the DC-DC convertor as a noise source to reduce common-mode current and far electric field.
Keyword (in Japanese) (See Japanese page) 
(in English) EMI / mode conversion / normal-mode noise / common-mode noise / bypass capacitor / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 214, EMCJ2014-32, pp. 5-10, Sept. 2014.
Paper # EMCJ2014-32 
Date of Issue 2014-09-05 (EMCJ, EST) 
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 EMCJ2014-32 EST2014-46

Conference Information
Committee EMCJ EST  
Conference Date 2014-09-12 - 2014-09-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Kitami Inst. Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Biomedical EMC, Electromagnetic Analysis, EMC, etc. 
Paper Information
Registration To EMCJ 
Conference Code 2014-09-EMCJ-EST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigation of Position to Install a Capacitor to Power Distribution Network for Suppressing Mode Conversion 
Sub Title (in English)  
Keyword(1) EMI  
Keyword(2) mode conversion  
Keyword(3) normal-mode noise  
Keyword(4) common-mode noise  
Keyword(5) bypass capacitor  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Toshiki Mikura  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Yoshitaka Toyota  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Kengo Iokibe  
3rd Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2014-09-12 10:30:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2014-32, EST2014-46 
Volume (vol) vol.114 
Number (no) no.214(EMCJ), no.215(EST) 
Page pp.5-10 
#Pages 6 
Date of Issue 2014-09-05 (EMCJ, EST) 

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