| Presentation | 2001/11/9 High efficiency microwave power amplifier with peak power injection M. Nakayama, K. Horiguchi, Y. Ikeda, Y. Sakai, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to amplify OFDM or multi-code CDMA modulation signals, which have large peak power to average power ratio (PAR), microwave amplifiers should be operated at large backoff. It is very important item to improve the amplifier's efficiency at large backoff. To enhance efficiency at large backoff operation, Peak Power Injection Amplifier (PPIA) is proposed. The PPIA is consists of class-AB and class-C amplifiers and circulator. The circulator is located at output-port of the class-AB amplifier. When instantaneous power of modulation signal is large, the RF power is injected from the class-C amplifier to the output of the class-AB amplifier though the circulator, in order to modulate load impedance of the class-AB amplifier. Experiment at 2GHz shows efficiency enhancements. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High Power Amplifier / Efficiency / Backoff / Peak power injection / Circulator |
| Paper # | ED2001-152,MW2001-112 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2001/11/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High efficiency microwave power amplifier with peak power injection |
| Sub Title (in English) | |
| Keyword(1) | High Power Amplifier |
| Keyword(2) | Efficiency |
| Keyword(3) | Backoff |
| Keyword(4) | Peak power injection |
| Keyword(5) | Circulator |
| 1st Author's Name | M. Nakayama |
| 1st Author's Affiliation | Mitsubishi Electric Corporation Information Technology R & D Center() |
| 2nd Author's Name | K. Horiguchi |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation Information Technology R & D Center |
| 3rd Author's Name | Y. Ikeda |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation Information Technology R & D Center |
| 4th Author's Name | Y. Sakai |
| 4th Author's Affiliation | Mitsubishi Electric Corporation Information Technology R & D Center |
| Date | 2001/11/9 |
| Paper # | ED2001-152,MW2001-112 |
| Volume (vol) | vol.101 |
| Number (no) | 418 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |