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Paper Abstract and Keywords
Presentation 2008-11-20 16:45
Hidden antenna current in domestic power-line network
Masahiro Kitagawa (Osaka univ) EMCJ2008-78
Abstract (in Japanese) (See Japanese page) 
(in English) he common-mode (CM) current generated from the differential-mode
(DM) signal at the unbalanced elements distributed on the power-line
network is the origin of the radiated emission from the power-line
communications (PLC). The LCL measured at the outlet is often used
as a measure of the unbalance in power-line. However not all
CM currents generated appear at the outlets.
In this Paper, we have analyzed the mode conversion at the swich
branch which consists of the ceiling light and the wall swith, forms
one-leg serial stub, and is typical unbalanced elements on the
domestic power-line. We have proved the existance of the
hidden antenna current under more general condition than
folded dipole. The hidden antenna currents contribute to the
radiated emission but not to the CM current or the LCL measured at
the outlet. Therefore the outlet LCL is ovbiously not good measure
of radiated emission. Taking the hidden antenna currents at the
switch-branch into account, the lowest LCL of the swich-branch
becomes --6dB. Taking the DM loss between the outlet and the
switch-branch into account, the effective (minimum) LCL is around
Keyword (in Japanese) (See Japanese page) 
(in English) power line communications (PLC, PLT) / radiated emission / switch branch / antenna current / common mode / mode conversion / series closed stub / LCL  
Reference Info. IEICE Tech. Rep., vol. 108, no. 307, EMCJ2008-78, pp. 21-26, Nov. 2008.
Paper # EMCJ2008-78 
Date of Issue 2008-11-13 (EMCJ) 
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 EMCJ  
Conference Date 2008-11-20 - 2008-11-21 
Place (in Japanese) (See Japanese page) 
Place (in English) AIST Tokyo Waterfront 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2008-11-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Hidden antenna current in domestic power-line network 
Sub Title (in English)  
Keyword(1) power line communications (PLC, PLT)  
Keyword(2) radiated emission  
Keyword(3) switch branch  
Keyword(4) antenna current  
Keyword(5) common mode  
Keyword(6) mode conversion  
Keyword(7) series closed stub  
Keyword(8) LCL  
1st Author's Name Masahiro Kitagawa  
1st Author's Affiliation Osaka university (Osaka univ)
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Date Time 2008-11-20 16:45:00 
Presentation Time 25 
Registration for EMCJ 
Paper # IEICE-EMCJ2008-78 
Volume (vol) IEICE-108 
Number (no) no.307 
Page pp.21-26 
#Pages IEICE-6 
Date of Issue IEICE-EMCJ-2008-11-13 

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