| Presentation | 2021-11-18 Development of 1mW Class Rectenna for 920-MHz Band Wireless Power Transfer System Katsumi Kawai, Naoki Shinohara, Tomohiko Mitani, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The time and effort required to replace and recharge the batteries of wearable devices has become a problem in medical and welfare fields. To solve the problem of power supply for wearable devices, a wireless power transfer (WPT) system in the 920-MHz band has been proposed. To realize this WPT system, a highly efficient and low-power rectenna is required. The purpose of this study is to develop a high efficiency and low power rectenna in the 920-MHz band. As a first step, we developed a 1 mW class 920-MHz band charge pump rectifier circuit. We designed the rectifier circuit to achieve an output DC voltage of 3.0 V at an input power of 0 dBm. As a result of measurement experiments, a rectifier efficiency of 62.3 % and an output voltage of 2.85 V were obtained at an input power of -0.42 dBm. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Charge-pump rectifier circuit / Source-pull simulation / 920-MHz band wireless power transfer / Wearable Device |
| Paper # | MW2021-71 |
| Date of Issue | 2021-11-11 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2021/11/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kagoshima University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave |
| Chair | Noriharu Suematsu(Tohoku Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) |
| Secretary | Tadashi Kawai(Saitama Univ.) / Kensuke Okubo(Toshiba) / Hideyuki Nakamizo |
| Assistant | Naoki Hasegawa(Softbank) / Kosuke Katayama(Waseda Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of 1mW Class Rectenna for 920-MHz Band Wireless Power Transfer System |
| Sub Title (in English) | |
| Keyword(1) | Charge-pump rectifier circuit |
| Keyword(2) | Source-pull simulation |
| Keyword(3) | 920-MHz band wireless power transfer |
| Keyword(4) | Wearable Device |
| 1st Author's Name | Katsumi Kawai |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Naoki Shinohara |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 3rd Author's Name | Tomohiko Mitani |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2021-11-18 |
| Paper # | MW2021-71 |
| Volume (vol) | vol.121 |
| Number (no) | MW-254 |
| Page | pp.pp.24-28(MW), |
| #Pages | 5 |
| Date of Issue | 2021-11-11 (MW) |