| IEICE Technical Committee Submission System Conference Paper's Information |
Online Proceedings [Sign in] Tech. Rep. Archives |
| Go Top Page | Go Previous | [Japanese] / [English] |
| Paper Abstract and Keywords | ||
| Presentation | 2021-07-02 14:20 Cavity Resonant Wireless Power Transfer Based on Online S-parameter Estimation Keito Takiya, Shinnosuke Kondo, Kentarou Murata, Naoki Honma (Iwate Univ.)  WPT2021-5 |
|
| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | To improve the transmission efficiency at blind spots caused by standing waves in a cavity, a novel cavity resonant wireless power transfer that utilizes the diversity effect of dual parasitic antennas is proposed in this report. In the proposed method, the reflection characteristics for arbitrary load conditions can be predicted by estimating the S-parameters between the antennas online from the fluctuation of the reflected signal observed at the transmitting antenna during load modulation of dual parasitic antennas. Then, based on the principle of ``transmission maximization via reflection minimization'' established in an electromagnetically shielded space, the load condition that maximizes transmission efficiency can be indirectly identified by searching for the minimum point of the predicted reflection response surface. In an experiment conducted in a 200-mm metal cavity, the transmission efficiency was improved by up to 14.4 times compared with the case of using a single parasitic antenna, and spatial uniformity with a transmission efficiency of approximately 50% or more at most measurement points, was achieved by the proposed method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless power transfer / Cavity resonance / Parasitic antenna / S-parameter / Load modulation / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 84, WPT2021-5, pp. 1-6, July 2021. | |
| Paper # | WPT2021-5 | |
| Date of Issue | 2021-06-25 (WPT) | |
| 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 | WPT2021-5 |
|
| Conference Information | |
| Committee | EMCJ EMD WPT |
| Conference Date | 2021-07-02 - 2021-07-02 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | WPT |
| Conference Code | 2021-07-EMCJ-EMD-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cavity Resonant Wireless Power Transfer Based on Online S-parameter Estimation |
| Sub Title (in English) | |
| Keyword(1) | Wireless power transfer |
| Keyword(2) | Cavity resonance |
| Keyword(3) | Parasitic antenna |
| Keyword(4) | S-parameter |
| Keyword(5) | Load modulation |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Keito Takiya |
| 1st Author's Affiliation | Iwate University (Iwate Univ.) |
| 2nd Author's Name | Shinnosuke Kondo |
| 2nd Author's Affiliation | Iwate University (Iwate Univ.) |
| 3rd Author's Name | Kentarou Murata |
| 3rd Author's Affiliation | Iwate University (Iwate Univ.) |
| 4th Author's Name | Naoki Honma |
| 4th Author's Affiliation | Iwate University (Iwate Univ.) |
| 5th Author's Name | |
| 5th Author's Affiliation | () |
| 6th Author's Name | |
| 6th Author's Affiliation | () |
| 7th Author's Name | |
| 7th Author's Affiliation | () |
| 8th Author's Name | |
| 8th Author's Affiliation | () |
| 9th Author's Name | |
| 9th Author's Affiliation | () |
| 10th Author's Name | |
| 10th Author's Affiliation | () |
| 11th Author's Name | |
| 11th Author's Affiliation | () |
| 12th Author's Name | |
| 12th Author's Affiliation | () |
| 13th Author's Name | |
| 13th Author's Affiliation | () |
| 14th Author's Name | |
| 14th Author's Affiliation | () |
| 15th Author's Name | |
| 15th Author's Affiliation | () |
| 16th Author's Name | |
| 16th Author's Affiliation | () |
| 17th Author's Name | |
| 17th Author's Affiliation | () |
| 18th Author's Name | |
| 18th Author's Affiliation | () |
| Speaker | Author-1 |
| Date Time | 2021-07-02 14:20:00 |
| Presentation Time | 25 minutes |
| Registration for | WPT |
| Paper # | WPT2021-5 |
| Volume (vol) | vol.121 |
| Number (no) | no.84 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2021-06-25 (WPT) |
[Return to Top Page]