| Presentation | 2023-03-17 A Study on the Transmission Directivity Control using wide-angle nulling for the Wireless Power Transmission Katsutoshi Kawai, Tomoyuki Nakasha, Yuuya Tanaka, Mitoshi Fujimoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | When the beam wireless power transmission is used in an indoor manned environment, the power transmission efficiency and the effect on human body are problems. In this paper, we examine a method to simultaneously realize retrodirective method and wide-angle null forming as these countermeasures. We propose the method using Multiple Null Constraints as null widening and additionally applying regularization to avoid overfitting against nulls. Also, the proposed method was evaluated by computer simulation, and it was confirmed that the median power ratio of received power to simulated human exposure power is improved compared with the conventional methods and that the decrease of received power with increasing number of constraints can be controlled by the regularization. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Adaptive Array Antenna / Wireless Power Transmission / Retrodirective / Wide-angle Nulling |
| Paper # | AP2022-241 |
| Date of Issue | 2023-03-09 (AP) |
| Conference Information | |
| Committee | AP |
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| Conference Date | 2023/3/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Toyama Prefectural Civic Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Chair | Hiroshi Yamada(Niigata Univ.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) |
| Secretary | Mitoshi Fujimoto(National Defense Academy) |
| Assistant | Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on the Transmission Directivity Control using wide-angle nulling for the Wireless Power Transmission |
| Sub Title (in English) | |
| Keyword(1) | Adaptive Array Antenna |
| Keyword(2) | Wireless Power Transmission |
| Keyword(3) | Retrodirective |
| Keyword(4) | Wide-angle Nulling |
| 1st Author's Name | Katsutoshi Kawai |
| 1st Author's Affiliation | Kyocera Corporation(Kyocera) |
| 2nd Author's Name | Tomoyuki Nakasha |
| 2nd Author's Affiliation | Kyocera Corporation(Kyocera) |
| 3rd Author's Name | Yuuya Tanaka |
| 3rd Author's Affiliation | Kyocera Corporation(Kyocera) |
| 4th Author's Name | Mitoshi Fujimoto |
| 4th Author's Affiliation | University of Fukui(Univ. of Fukui) |
| Date | 2023-03-17 |
| Paper # | AP2022-241 |
| Volume (vol) | vol.122 |
| Number (no) | AP-441 |
| Page | pp.pp.43-48(AP), |
| #Pages | 6 |
| Date of Issue | 2023-03-09 (AP) |