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| Presentation | 2022-04-15 10:05 Transmission Efficiency Improvement of Short-Range 4x4 MIMO-WiCoPT System Shintaro Miya, Youtaro Watanabe, Taishi Nara, Satoshi Yoshida (Kagoshima Univ.), Shigeo Kawasaki (Space&Mobile Wireless Technology Inc.), Kenjiro Nishikawa (Kagoshima Univ.)  WPT2022-1 MW2022-1 Link to ES Tech. Rep. Archives: MW2022-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This research has investigated the short-range Multi Input Multi Output (MIMO) Wireless Communication and Power Transfer (WiCoPT) system that can simultaneously transmit information and power using the same antenna and frequency band. Our previous work indicated the proposed WiCoPT system can achieve high-level transmission capacity and power transmission efficiency. In addition, the system significantly improved the positioning-free capability. This paper investigates the relationship between the input and output feeding circuits (matching circuits) and the transmission efficiency. A 4x4 MIMO system with 2x2 planar patch antennas is used for both transmission and reception. Simulation results clarify the optimal matching condition to maximize the transmission efficiency under the MIMO control. The maximum efficiency improvement of 35% is achieved at a transmission distance of 10 mm, with a transmission efficiency of 59%, and the maximum transmission capacity of 52 bits/s/Hz. Our investigation indicates that a variable matching circuits effectively optimize the propagation condition between the transmitter and the receiver under the MIMO control, resulting in high-level transmission characteristics. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | WiCoPT / MIMO / WPT / matching circuits / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 1, WPT2022-1, pp. 1-5, April 2022. | |
| Paper # | WPT2022-1 | |
| Date of Issue | 2022-04-08 (WPT, MW) | |
| 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 | WPT2022-1 MW2022-1 Link to ES Tech. Rep. Archives: MW2022-1 |
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| Conference Information | |
| Committee | MW WPT |
| Conference Date | 2022-04-15 - 2022-04-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Power Transfer, Microwave |
| Paper Information | |
| Registration To | WPT |
| Conference Code | 2022-04-MW-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transmission Efficiency Improvement of Short-Range 4x4 MIMO-WiCoPT System |
| Sub Title (in English) | |
| Keyword(1) | WiCoPT |
| Keyword(2) | MIMO |
| Keyword(3) | WPT |
| Keyword(4) | matching circuits |
| Keyword(5) | |
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| 1st Author's Name | Shintaro Miya |
| 1st Author's Affiliation | Kagoshima University (Kagoshima Univ.) |
| 2nd Author's Name | Youtaro Watanabe |
| 2nd Author's Affiliation | Kagoshima University (Kagoshima Univ.) |
| 3rd Author's Name | Taishi Nara |
| 3rd Author's Affiliation | Kagoshima University (Kagoshima Univ.) |
| 4th Author's Name | Satoshi Yoshida |
| 4th Author's Affiliation | Kagoshima University (Kagoshima Univ.) |
| 5th Author's Name | Shigeo Kawasaki |
| 5th Author's Affiliation | Space&Mobile Wireless Technology Inc. (Space&Mobile Wireless Technology Inc.) |
| 6th Author's Name | Kenjiro Nishikawa |
| 6th Author's Affiliation | Kagoshima University (Kagoshima Univ.) |
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| Speaker | Author-2 |
| Date Time | 2022-04-15 10:05:00 |
| Presentation Time | 25 minutes |
| Registration for | WPT |
| Paper # | WPT2022-1, MW2022-1 |
| Volume (vol) | vol.122 |
| Number (no) | no.1(WPT), no.2(MW) |
| Page | pp.1-5 |
| #Pages | 5 |
| Date of Issue | 2022-04-08 (WPT, MW) |
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