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| Presentation | 2018-04-20 09:55 A Study of Antennas for Wireless Communication and Propagation Model in Seawater Naomichi Fujii, Hiroyasu Sato, Qiang Chen (Tohoku Univ.), Nozomu Ishii (Niigata Univ.), Masaharu Takahashi (Chiba Univ.), Hiroshi Yoshida, Ryotaro Suga (JAMSTEC)  AP2018-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, wireless communications in seawater by using electromagnetic waves has been studied because a robust communication method in seawater has been desired. In seawater, the higher frequency is, the stronger attenuation electromagnetic waves have. To extend propagation distance, lower frequencies should be used if bandwidth allows. However, the wavelength of lower frequency electromagnetic wave is too long to use antennas that adjusted to its wavelength even in seawater. Therefore, antennas in seawater are usually small antennas, so matching circuits are required. In this report, the propagation characteristics between small antennas in seawater are simulated. And transmission efficiencies are calculated when matching circuits that include losses are connected to these antennas. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Matching circuit / Dipole antenna / Loop antenna / Underwater communication / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 5, AP2018-5, pp. 23-28, April 2018. | |
| Paper # | AP2018-5 | |
| Date of Issue | 2018-04-12 (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 | AP2018-5 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2018-04-19 - 2018-04-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hachijomachi-Shokokai |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2018-04-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of Antennas for Wireless Communication and Propagation Model in Seawater |
| Sub Title (in English) | |
| Keyword(1) | Matching circuit |
| Keyword(2) | Dipole antenna |
| Keyword(3) | Loop antenna |
| Keyword(4) | Underwater communication |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Naomichi Fujii |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Hiroyasu Sato |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Qiang Chen |
| 3rd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 4th Author's Name | Nozomu Ishii |
| 4th Author's Affiliation | Niigata University (Niigata Univ.) |
| 5th Author's Name | Masaharu Takahashi |
| 5th Author's Affiliation | Chiba University (Chiba Univ.) |
| 6th Author's Name | Hiroshi Yoshida |
| 6th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| 7th Author's Name | Ryotaro Suga |
| 7th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
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| Speaker | Author-2 |
| Date Time | 2018-04-20 09:55:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2018-5 |
| Volume (vol) | vol.118 |
| Number (no) | no.5 |
| Page | pp.23-28 |
| #Pages | 6 |
| Date of Issue | 2018-04-12 (AP) |
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