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Paper Abstract and Keywords
Presentation 2026-07-16 14:55
Evaluation of Temperature and Humidity Effects on Transmission Characteristics of VCTF Cables for Power Line Communication
Natsume Nagaoka, Yuji Igata (Kyutech), Shigeru Ichinose (Panasonic), Daisuke Nakayama, Tohlu Matsushima, Yuki Fukumoto (Kyutech) EMCJ2026-20
Abstract (in Japanese) (See Japanese page) 
(in English) Power line communication (PLC) utilizes existing power lines as communication channels, making it effective for network construction in environments such as factories where deploying dedicated communication cables is difficult. In this paper, focusing on VCTF cables intended for PLC applications, we measured the temperature and humidity characteristics using the open-short method with a vector network analyzer, and quantitatively analyzed their variation trends and magnitudes.
The measurement results revealed that the primary components of the transmission characteristics respond promptly to temperature variations, followed by only minor subsequent shifts. At a frequency of $30,mathrm{MHz}$, the attenuation constant increased by a factor of approximately 2.40 due to a temperature rise from 27$^circmathrm{C}$ to 70$^circmathrm{C}$, demonstrating that temperature is the dominant factor in these variations. On the other hand, although the change in the attenuation constant due to humidity proceeds through a rapid response and subsequent gradual moisture absorption, and its overall magnitude is relatively small, it was found that even such a slight increase can accumulate and exert a non-negligible impact when considering practical environments where PLC systems are operated over long-distance power lines.
Keyword (in Japanese) (See Japanese page) 
(in English) Power Line Communication / Transmission characteristics / Temperature characteristics / Humidity characteristics / VCTF cable / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 114, EMCJ2026-20, pp. 23-28, July 2026.
Paper # EMCJ2026-20 
Date of Issue 2026-07-09 (EMCJ) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee EMCJ  
Conference Date 2026-07-16 - 2026-07-16 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2026-07-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Temperature and Humidity Effects on Transmission Characteristics of VCTF Cables for Power Line Communication 
Sub Title (in English)  
Keyword(1) Power Line Communication  
Keyword(2) Transmission characteristics  
Keyword(3) Temperature characteristics  
Keyword(4) Humidity characteristics  
Keyword(5) VCTF cable  
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1st Author's Name Natsume Nagaoka  
1st Author's Affiliation Kyushu Institute of Technology (Kyutech)
2nd Author's Name Yuji Igata  
2nd Author's Affiliation Kyushu Institute of Technology (Kyutech)
3rd Author's Name Shigeru Ichinose  
3rd Author's Affiliation Panasonic Holdings Corporation (Panasonic)
4th Author's Name Daisuke Nakayama  
4th Author's Affiliation Kyushu Institute of Technology (Kyutech)
5th Author's Name Tohlu Matsushima  
5th Author's Affiliation Kyushu Institute of Technology (Kyutech)
6th Author's Name Yuki Fukumoto  
6th Author's Affiliation Kyushu Institute of Technology (Kyutech)
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Speaker Author-1 
Date Time 2026-07-16 14:55:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2026-20 
Volume (vol) vol.126 
Number (no) no.114 
Page pp.23-28 
#Pages 6 
Date of Issue 2026-07-09 (EMCJ) 

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