| 一种输出匹配可调的、高线性度宽带功率放大器 |
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| 引用本文： | 陈昌麟,张万荣.一种输出匹配可调的、高线性度宽带功率放大器[J].电子器件,2015,38(2):321-326. |
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| 作者姓名： | 陈昌麟 张万荣 |
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| 作者单位： | 1. 北京工业大学电子信息与控制工程学院,北京,100124
2. 泰山学院物理与电子工程学院,山东 泰安,271000 |
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| 基金项目： | 北京市自然科学基金项目，山东省高等学校科技计划项目 |
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| 摘 要： | 采用自适应偏置技术和有源电感实现了一款输出匹配可调的、高线性度宽带功率放大器(PA)。自适应偏置技术抑制了功放管直流工作点的漂移,提高了PA的线性度。有源电感参与输出匹配,实现了输出匹配可调谐,该策略可调整因工艺偏差、封装寄生造成的输出匹配退化。利用软件ADS对电路进行验证,结果表明,在4 GHz频率下,输入1dB压缩点(Pin 1dB)为-7dBm,输出1dB压缩点(Pout 1dB)为11dBm,功率附加效率(PAE)为8.7%。在3.1GHz~4.8 GHz频段内,增益为(20.3±1.1)d B,输入、输出的回波损耗均小于-10dB。
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| 关 键 词： | 功率放大器 线性度 输出匹配 自适应偏置 有源电感 |
A Tunable Output Matching and High Linearity Broadband Power Amplifier |
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| CHEN Changlin,ZHANG Wanrong,ZHAO Feiyi,ZHUO Huihan,BAI Yang,JIANG Zhiyun,HU Ruixin,CHEN Liang.A Tunable Output Matching and High Linearity Broadband Power Amplifier[J].Journal of Electron Devices,2015,38(2):321-326. |
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| Authors: | CHEN Changlin ZHANG Wanrong ZHAO Feiyi ZHUO Huihan BAI Yang JIANG Zhiyun HU Ruixin CHEN Liang |
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| Affiliation: | CHEN Changlin;ZHANG Wanrong;ZHAO Feiyi;ZHUO Huihan;BAI Yang;JIANG Zhiyun;HU Ruixin;CHEN Liang;College of Electronic Information and Control Engineering,Beijing University of Technology;College of physics and Electronic Engineering,Taishan University; |
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| Abstract: | A broadband power amplifier(PA) was designed by adopting adaptive bias technique and active inductor. Adaptive bias technique effectively enhanced the power amplifier linearity by inhibiting DC operation point drifting of transistor. Active inductor participated in output matching realized output matching tuneability, this scheme could adjust output matching degradation due to process deviation and packaging parasitics. The PA was verified by simulation tool ADS. The results indicated the power amplifier had input 1dB compression point (IP1dB) of -7dBm, output 1dB compression point (OP1dB) of 11dBm at 4GHz, and power added efficiency (PAE) of 8.7%. Over the frequency range of 3.1-4.8GHz, the power amplifier showed a gain of 20.3dB with the gain flatness of 1.1dB, the input and output return loss are all less than -10dB. |
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| Keywords: | power amplifier linearity output matching adaptive bias active inductor |
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