| Presentation | 2020-05-22 Prototypes of 461.25 [MHz] rectifier circuits by using class E switching Keitaro Omura, Takuya Komatsu, Norimasa Nakashima, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The authors are working on the construction of a 461.25 [MHz] wireless power transfer system by utilizing the Japanese domestic system of specific experimental testing radio station established by the Ministry of Internal Affairs and Communications. In this paper, we report rectifier circuits around the above frequencies. In order to reduce the switching loss arises at diodes in high frequency region, we introduce class E switching. Furthermore, we propose a class E bridge type full-wave rectifier circuit that applies a class E resonant low dv / dt rectifier circuit. Experimental results reveal that the rectification efficiency improves with the increment of the input power. Our prototyped class E rectifier circuit record a rectification efficiency of 38.0 [%] (input power +15 [dBm]) at the design frequency. On the other hand, the rectification efficiency of the class E bridge full-wave rectification circuit is 70.9 [%] (input power + 15 [dBm]), but the peak value is at a frequency significantly lower than the design one. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | class E rectifier circuit / class E switching / wireless power transfer |
| Paper # | EMT2020-2 |
| Date of Issue | 2020-05-15 (EMT) |
| Conference Information | |
| Committee | EMT / IEE-EMT |
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| Conference Date | 2020/5/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Metropolitan Univ., Akihabara Satellite Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Electromagnetic Theory, etc. |
| Chair | Koichi Hirayama(Kitami Inst. of Tech.) / Keiji Goto(National Defense Academy) |
| Vice Chair | Hiroyuki Deguchi(Doshisha Univ.) |
| Secretary | Hiroyuki Deguchi(Fukuoka Inst.of Tech.) / (Tokyo Metropolitan Univ.) |
| Assistant | Junichiro Sugisaka(Kitami Inst. of Tech.) / Tsuyoshi Matsuoka(Kyushu Sangyo Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Theory / Technical Meeting on Electromagnetic Theory |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Prototypes of 461.25 [MHz] rectifier circuits by using class E switching |
| Sub Title (in English) | |
| Keyword(1) | class E rectifier circuit |
| Keyword(2) | class E switching |
| Keyword(3) | wireless power transfer |
| 1st Author's Name | Keitaro Omura |
| 1st Author's Affiliation | Fukuoka Institute of Technology(FIT) |
| 2nd Author's Name | Takuya Komatsu |
| 2nd Author's Affiliation | Fukuoka Institute of Technology(FIT) |
| 3rd Author's Name | Norimasa Nakashima |
| 3rd Author's Affiliation | Fukuoka Institute of Technology(FIT) |
| Date | 2020-05-22 |
| Paper # | EMT2020-2 |
| Volume (vol) | vol.120 |
| Number (no) | EMT-33 |
| Page | pp.pp.7-12(EMT), |
| #Pages | 6 |
| Date of Issue | 2020-05-15 (EMT) |