| Presentation | 2009-09-25 Design and Fabrication for a GaN HEMT Microwave Doherty Power Amplifier with a Series Connected Load Satoshi KAWAI, Yoichiro TAKAYAMA, Ryo ISIKAWA, Kazuhiko HONJO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Doherty amplifiers are expected as a high-efficiency microwave power amplifier at a wide dynamic range. Doherty introduced two types of concepts for high-efficiency amplifiers in 1939. One involved a shunt connected load and the other involved a series connected load. The first one is well known. We proposed a microwave Doherty power amplifier with a series connected load using baluns. A 1.9GHz GaN HEMT Doherty power amplifier was designed and fabricated. At 24dBm middle and 31dBm saturated output powers, the amplifier realized improved power efficiencies of 31% and 56%, respectively, compared to power efficiencies of 15% at 24dBm output power and 57% at 34dBm saturated power, respectively, obtained with a reference push-pull amplifier. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Doherty amplifier / series connected load type / microwave power amplifiers / GaN HEMT / balun |
| Paper # | MW2009-85 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2009/9/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| 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) | Design and Fabrication for a GaN HEMT Microwave Doherty Power Amplifier with a Series Connected Load |
| Sub Title (in English) | |
| Keyword(1) | Doherty amplifier |
| Keyword(2) | series connected load type |
| Keyword(3) | microwave power amplifiers |
| Keyword(4) | GaN HEMT |
| Keyword(5) | balun |
| 1st Author's Name | Satoshi KAWAI |
| 1st Author's Affiliation | The University of Electro-Communications() |
| 2nd Author's Name | Yoichiro TAKAYAMA |
| 2nd Author's Affiliation | The University of Electro-Communications |
| 3rd Author's Name | Ryo ISIKAWA |
| 3rd Author's Affiliation | The University of Electro-Communications |
| 4th Author's Name | Kazuhiko HONJO |
| 4th Author's Affiliation | The University of Electro-Communications |
| Date | 2009-09-25 |
| Paper # | MW2009-85 |
| Volume (vol) | vol.109 |
| Number (no) | 210 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |