| Presentation | 2023-03-17 Examination of directivity control method and operation frequency for wireless power transmission in indoor manned environment Tomoyuki Nakasha, Katsutoshi Kawai, Yuuya Tanaka, Mitoshi Fujimoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, beam wireless power transmission(WPT) systems supply energy for targets located on separate places have been gathering attention. For practical realization of WPT, the use of an array antenna directivity control such as retrodirective, linearly constrained retrodirective etc. is well known to be one of the most effective means to achieve both ofefficiency and human safety in indoor manned environment. On the other hand, there are several choices of an operation frequency, for example, 2.4GHz and 5.7GHz. WPT systems at each operation frequencies are supposed to show different efficiency and human exposure level because of frequency dependent propagation property. For this reason, not only a choice of directivity control methods but also of a choice of an operation frequency is also an important factor. In this study, directivity control methods are evaluated at several frequencies in terms of efficiency and human safety, which contributes to a better choice of an operation frequency. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless power transmission / Indoor environment / Directivity control / Human safety / Retrodirective |
| Paper # | AP2022-242 |
| 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) | Examination of directivity control method and operation frequency for wireless power transmission in indoor manned environment |
| Sub Title (in English) | |
| Keyword(1) | Wireless power transmission |
| Keyword(2) | Indoor environment |
| Keyword(3) | Directivity control |
| Keyword(4) | Human safety |
| Keyword(5) | Retrodirective |
| 1st Author's Name | Tomoyuki Nakasha |
| 1st Author's Affiliation | Kyocera Corporation(Kyocera) |
| 2nd Author's Name | Katsutoshi Kawai |
| 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 # | AP2022-242 |
| Volume (vol) | vol.122 |
| Number (no) | AP-441 |
| Page | pp.pp.49-54(AP), |
| #Pages | 6 |
| Date of Issue | 2023-03-09 (AP) |