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| Presentation | 2017-03-07 10:50 Study on Direction of Arrival Estimation of Harmonics Re-radiation for a Harmonics-Based Retrodirective System Shogo Kawashima, Naoki Shinohara, Tomohiko Mitani (Kyoto Univ.)  WPT2016-77 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A Haramonics-Based Retorodirective System (HBRS) is proposed for microwave power transmission. Re-radiation of rectenna harmonics is adopted for the pilot signal in the HBRS. In this paper, we constructed a estimating system of harmonics arrival direction from a rectenna with a λ/2 dipole antenna and a double voltage rectifier. We evaluated a phase detector we adopted, and the detector had a linear relationship between the output voltage and the phase difference of input signal. We conducted experiments of estimating direction of arrival. At first, we simulate the re-radiation harmonics by a signal generator and a horn antenna. In the estimated results, the maximum error was 〖3.2〗^∘. Next, we transmitted microwave power to the rectenna, and estimated the direction of harmonic arrival. As a result, the harmonics from the transmitting antenna flowed in the estimating system and the error was expanded. We set radiowave absorber and blocked the harmonics from the transmitting antenna. In the re-experimental results, the difference with the simulated harmonics experiments was reduced by 2^∘. As a design guideline of the HBRS, we showed that it is necessary to consider the effects of the harmonics from transmitting antenna. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Microwave power transmission / Direction of Arrival / Harmonic re-re-radiation / Retrodirective / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 116, no. 499, WPT2016-77, pp. 63-67, March 2017. | |
| Paper # | WPT2016-77 | |
| Date of Issue | 2017-02-27 (WPT) | |
| ISSN | Print edition: ISSN 0913-5685 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 | WPT2016-77 |
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| Conference Information | |
| Committee | WPT |
| Conference Date | 2017-03-06 - 2017-03-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyoto Univ. Uji Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Power Transfer, SPS Technology, etc. |
| Paper Information | |
| Registration To | WPT |
| Conference Code | 2017-03-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Direction of Arrival Estimation of Harmonics Re-radiation for a Harmonics-Based Retrodirective System |
| Sub Title (in English) | |
| Keyword(1) | Microwave power transmission |
| Keyword(2) | Direction of Arrival |
| Keyword(3) | Harmonic re-re-radiation |
| Keyword(4) | Retrodirective |
| Keyword(5) | |
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| Keyword(8) | |
| 1st Author's Name | Shogo Kawashima |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Naoki Shinohara |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Tomohiko Mitani |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2017-03-07 10:50:00 |
| Presentation Time | 25 minutes |
| Registration for | WPT |
| Paper # | WPT2016-77 |
| Volume (vol) | vol.116 |
| Number (no) | no.499 |
| Page | pp.63-67 |
| #Pages | 5 |
| Date of Issue | 2017-02-27 (WPT) |
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