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Paper Abstract and Keywords
Presentation 2024-10-17 12:50
[Poster Presentation] Experimental Estimation of Phase and Attenuation Constants for Transmission between Dipole Antennas in Proximity to Vinyl Chloride Tubes in Simulated Submarine Salt Water
Naoki Kuzu, Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Qiaowei Yuan (Tohoku Institute of Tech.), Qiang Chen (Tohoku Univ.), Hiroshi Yoshida (JAMSTEC) AP2024-96
Abstract (in Japanese) (See Japanese page) 
(in English) The authors have been studying the feasibility of building an undersea electromagnetic wave communication system for maintenance and inspection of floating offshore wind turbines. There is a problem of high attenuation of electromagnetic waves for wireless communication underwater. To solve this problem, the authors focused on underwater support structures and considered that the lower floating concrete column could be used as a waveguide to reduce propagation loss. In this report, commercially available polyvinyl chloride pipe is used for the scale model of annular concrete columns. A vinyl chloride tube with two dipole antennas in close proximity is submerged in a seawater simulated salt water. Transmission characteristics between the antennas are measured, and it is experimentally confirmed that the presence of an annular dielectric column can reduce the propagation loss between the dipole antennas. The phase and attenuation constants are estimated from the measured transmission characteristics. The phase and attenuation constants obtained from the analysis of vinyl chloride pipes in the sea and the regression from the measurement results show similar trends.
Keyword (in Japanese) (See Japanese page) 
(in English) sea water / concrete column / radio propagation / attenuation constant / phase constant / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 206, AP2024-96, pp. 107-112, Oct. 2024.
Paper # AP2024-96 
Date of Issue 2024-10-09 (AP) 
ISSN 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 AP2024-96

Conference Information
Committee AP  
Conference Date 2024-10-16 - 2024-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) ACROS Fukuoka 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Student Session, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2024-10-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Estimation of Phase and Attenuation Constants for Transmission between Dipole Antennas in Proximity to Vinyl Chloride Tubes in Simulated Submarine Salt Water 
Sub Title (in English)  
Keyword(1) sea water  
Keyword(2) concrete column  
Keyword(3) radio propagation  
Keyword(4) attenuation constant  
Keyword(5) phase constant  
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1st Author's Name Naoki Kuzu  
1st Author's Affiliation Niigata University (Niigata Univ.)
2nd Author's Name Nozomu Ishii  
2nd Author's Affiliation Niigata University (Niigata Univ.)
3rd Author's Name Masaharu Takahashi  
3rd Author's Affiliation Chiba University (Chiba Univ.)
4th Author's Name Qiaowei Yuan  
4th Author's Affiliation Tohoku Institute of Technology (Tohoku Institute of Tech.)
5th Author's Name Qiang Chen  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
6th Author's Name Hiroshi Yoshida  
6th Author's Affiliation Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
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Speaker Author-1 
Date Time 2024-10-17 12:50:00 
Presentation Time 110 minutes 
Registration for AP 
Paper # AP2024-96 
Volume (vol) vol.124 
Number (no) no.206 
Page pp.107-112 
#Pages 6 
Date of Issue 2024-10-09 (AP) 

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