| Presentation | 2023-01-20 Study on Human-awave Tracking Null Steering for Microwave Wireless Power Transfer and Development of Electromagnetic Field Visualization System Kyoshiro Muramatsu, Kentaro Murata, Naoki Honma, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose human-aware tracking null steering for microwave wireless power transfer and describe how to implement an electromagnetic field visualization system. The proposed method acquires the channel between a transmitter (Tx) and a moving human from the difference in time-variant signals and determines the beamforming weight that maximizes the ratio of the received power to the human exposure power. The weight is calculated sequentially to enable avoiding the moving human. In our developed electromagnetic field visualisation system, the electromagnetic field measurement scene is first captured by a camera and electromagnetic field information is assigned to each pixel in the camera image. The system then maps the electromagnetic field strength when the proposed BF is applied to the real environment image, thereby realising the visualisation of the electromagnetic field strength. The experiment demonstrated that the proposed method achieved a 10.1-dB higher ratio of the received power to the human exposure power than that of maximum ratio transmission. The results of the electromagnetic field visualisation show that it is possible to visualise the beam information corresponding to the human body position. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Wireless power transfer / Beamforming / Array signal processing / Electromagnetic field visualization |
| Paper # | AP2022-192 |
| Date of Issue | 2023-01-12 (AP) |
| Conference Information | |
| Committee | AP / WPT |
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| Conference Date | 2023/1/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hiroshima Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Radio propagation, Wireless transmission technology, Antennas and Propagation |
| Chair | Hiroshi Yamada(Niigata Univ.) / Kenjiro Nishikaa(Kagoshima Univ.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) / Hiroshi Hirayama(Nagoya Inst. of Tech.) |
| Secretary | Mitoshi Fujimoto(National Defense Academy) / Hiroshi Hirayama(Mitsubishi Electric) |
| Assistant | Tomoki Murakami(NTT) / Asako Suzuki(Fujiwaves) / Yuki Tanaka(Panasonic) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Wireless Power Transfer |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Human-awave Tracking Null Steering for Microwave Wireless Power Transfer and Development of Electromagnetic Field Visualization System |
| Sub Title (in English) | |
| Keyword(1) | Wireless power transfer |
| Keyword(2) | Beamforming |
| Keyword(3) | Array signal processing |
| Keyword(4) | Electromagnetic field visualization |
| 1st Author's Name | Kyoshiro Muramatsu |
| 1st Author's Affiliation | Iwate University(Iwate Univ.) |
| 2nd Author's Name | Kentaro Murata |
| 2nd Author's Affiliation | Iwate University(Iwate Univ.) |
| 3rd Author's Name | Naoki Honma |
| 3rd Author's Affiliation | Iwate University(Iwate Univ.) |
| Date | 2023-01-20 |
| Paper # | AP2022-192 |
| Volume (vol) | vol.122 |
| Number (no) | AP-339 |
| Page | pp.pp.86-91(AP), |
| #Pages | 6 |
| Date of Issue | 2023-01-12 (AP) |