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| Presentation | 2023-01-20 13:55 Study on Human-awave Tracking Null Steering for Microwave Wireless Power Transfer and Development of Electromagnetic Field Visualization System Kyoshiro Muramatsu, Kentaro Murata, Naoki Honma (Iwate Univ.)  AP2022-192 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we propose human-aware tracking null steering for microwave wireless power transfer and describe how to implement an electromagnetic field visualization system. The proposed method acquires the channel between a transmitter (Tx) and a moving human from the difference in time-variant signals and determines the beamforming weight that maximizes the ratio of the received power to the human exposure power. The weight is calculated sequentially to enable avoiding the moving human. In our developed electromagnetic field visualisation system, the electromagnetic field measurement scene is first captured by a camera and electromagnetic field information is assigned to each pixel in the camera image. The system then maps the electromagnetic field strength when the proposed BF is applied to the real environment image, thereby realising the visualisation of the electromagnetic field strength. The experiment demonstrated that the proposed method achieved a 10.1-dB higher ratio of the received power to the human exposure power than that of maximum ratio transmission. The results of the electromagnetic field visualisation show that it is possible to visualise the beam information corresponding to the human body position. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless power transfer / Beamforming / Array signal processing / Electromagnetic field visualization / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 339, AP2022-192, pp. 86-91, Jan. 2023. | |
| Paper # | AP2022-192 | |
| Date of Issue | 2023-01-12 (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 | AP2022-192 |
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| Conference Information | |
| Committee | AP WPT |
| Conference Date | 2023-01-19 - 2023-01-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hiroshima Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Radio propagation, Wireless transmission technology, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2023-01-AP-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Human-awave Tracking Null Steering for Microwave Wireless Power Transfer and Development of Electromagnetic Field Visualization System |
| Sub Title (in English) | |
| Keyword(1) | Wireless power transfer |
| Keyword(2) | Beamforming |
| Keyword(3) | Array signal processing |
| Keyword(4) | Electromagnetic field visualization |
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| 1st Author's Name | Kyoshiro Muramatsu |
| 1st Author's Affiliation | Iwate University (Iwate Univ.) |
| 2nd Author's Name | Kentaro Murata |
| 2nd Author's Affiliation | Iwate University (Iwate Univ.) |
| 3rd Author's Name | Naoki Honma |
| 3rd Author's Affiliation | Iwate University (Iwate Univ.) |
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| Speaker | Author-1 |
| Date Time | 2023-01-20 13:55:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2022-192 |
| Volume (vol) | vol.122 |
| Number (no) | no.339 |
| Page | pp.86-91 |
| #Pages | 6 |
| Date of Issue | 2023-01-12 (AP) |
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