| 摘要: |
| 提出给主功放分配多的功率来提高Doherty回退范围的功率转换效率。建立了数学模型，从理论上验证了回退范围的效率提高。电路测试证明，回退6 dB漏极效率大于59〖WT《Times New Roman》〗%〖WTBZ〗，高同类宽带Doherty 7个百分点，峰值输出功率46.5 dBm。另外，对类集总传输线的解析公式进行修正，校正了原来公式在理论计算中存在的32.5〖WT《Times New Roman》〗%〖WTBZ〗的误差确，缩短了设计时间，降低了设计难度。 |
| 关键词: 宽带Doherty放大器 类集总传输线 回退效率 |
| DOI： |
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| 基金项目: |
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| Design of a back-off efficiency enhancement broadband doherty amplifier |
| JIA Wenqiang,YU Hongxi,YANG Fei |
| () |
| Abstract: |
| This paper proposes distributing more power to main amplifier to improve the power conversion efficiency of the back-off scope. A mathematical model is established,which theoretically verifies the efficiency enhancement of the regression. The circuit measurement proves that drain efficiency at 6 dB back-off is greater than 59〖WT《Times New Roman》〗%〖WTBZ〗,7 percentage points higher than that of other wide-band Doherty,and that peak power output is 46.5 dBm. In addition,the analytical formula for the quasi-lumped transmission line is corrected in which there exists 32.5% error,thus reducing the time and difficulty of design. |
| Key words: broadband Doherty amplifier quasi-lumped transmission line back-off efficiency |
