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| Presentation | 2008-11-20 16:45 Hidden antenna current in domestic power-line network Masahiro Kitagawa (Osaka univ)  EMCJ2008-78 |
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| 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 0dB. |
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| 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 | |
| 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 | EMCJ2008-78 |
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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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| Speaker | Author-1 |
| Date Time | 2008-11-20 16:45:00 |
| Presentation Time | 25 minutes |
| Registration for | EMCJ |
| Paper # | EMCJ2008-78 |
| Volume (vol) | vol.108 |
| Number (no) | no.307 |
| Page | pp.21-26 |
| #Pages | 6 |
| Date of Issue | 2008-11-13 (EMCJ) |
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