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| Presentation | 2021-10-07 14:25 [Poster Presentation] A Study on Modeling Method of Surrounding Objects with RCS in FDTD Method Kohei Nono, Mitoshi Fujimoto (Univ. of Fukui), Ryo Yamaguchi, Kazuma Tomimoto (SB)  AP2021-94 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To achieve single-frequency Full-Duplex communication, self-interference rejection of about 110 dB is required, which has been considered practically impossible for mobile devices. The authors have been investigating the effect of antenna location and surrounding structures on the coupling between the transmitting and receiving antennas in order to achieve the same frequency full duplex in vehicle communications. When investigating the influence of surrounding objects by electromagnetic field analysis using the FDTD method, the amount of memory used and the increase in calculation time due to the precise modeling of the surrounding structures and the installation of the surrounding objects become problems. Therefore, in this report, the surrounding objects such as cars are modeled simply by radar cross sections, and their validity and computational cost reduction effects are evaluated. First, the projected area at 3.9 GHz was calculated from the cross-sectional area of the car's 26 GHz radar, and a metal plate equal to that area was used as a simple model of the other car. When the analysis was performed with this simplified model in front of the vehicle, and when the analysis was performed with a vehicle model equal to the size of the actual vehicle, the frequency response was generally consistent. By using the simplified model, we were able to reduce the amount of CPU memory used by 26% and the computation time by 33%. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Single-Frequency Full-Duplex Communication / FDTD Method / Surrounding Objects / Radar cross-section / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 191, AP2021-94, pp. 102-103, Oct. 2021. | |
| Paper # | AP2021-94 | |
| Date of Issue | 2021-09-30 (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 | AP2021-94 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2021-10-07 - 2021-10-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Student Session, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-10-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Modeling Method of Surrounding Objects with RCS in FDTD Method |
| Sub Title (in English) | |
| Keyword(1) | Single-Frequency Full-Duplex Communication |
| Keyword(2) | FDTD Method |
| Keyword(3) | Surrounding Objects |
| Keyword(4) | Radar cross-section |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Kohei Nono |
| 1st Author's Affiliation | University of Fukui (Univ. of Fukui) |
| 2nd Author's Name | Mitoshi Fujimoto |
| 2nd Author's Affiliation | University of Fukui (Univ. of Fukui) |
| 3rd Author's Name | Ryo Yamaguchi |
| 3rd Author's Affiliation | SoftBank Corp. (SB) |
| 4th Author's Name | Kazuma Tomimoto |
| 4th Author's Affiliation | SoftBank Corp. (SB) |
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| Speaker | Author-1 |
| Date Time | 2021-10-07 14:25:00 |
| Presentation Time | 75 minutes |
| Registration for | AP |
| Paper # | AP2021-94 |
| Volume (vol) | vol.121 |
| Number (no) | no.191 |
| Page | pp.102-103 |
| #Pages | 2 |
| Date of Issue | 2021-09-30 (AP) |
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