| VHF波段80W宽带线性功率放大器 |
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| 引用本文： | 黄鹏,刘小军,方广有.VHF波段80W宽带线性功率放大器[J].科学技术与工程,2009,9(12). |
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| 作者姓名： | 黄鹏 刘小军 方广有 |
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| 作者单位： | 1. 中国科学院电子学研究所高功率微波与电磁辐射重点实验室,北京,100190;中国科学院研究生院,北京,100039
2. 中国科学院电子学研究所高功率微波与电磁辐射重点实验室,北京,100190 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 针对高分辨率成像冰川厚度探测雷达设计了一款VHF波段宽带高功率线性放大器.以硅VDMOS器件作为功放管,采用推挽结构和传输线变压器阻抗变换网络相结合的方法,实现了50 MHz～200 MHz频带范围内80 W线性功率输出.该放大器由四级级联组成,每一级均采用ADS作负载牵引仿真确定最佳负载阻抗并用负反馈技术确保增益平坦.测试结果表明,1 dB压缩点输出功率为80 W,增益54 dB,附加效率40%,谐波小于-30 dBc.
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| 关 键 词： | 功率放大器 垂直双向扩散金属-氧化物平导体(Vertical Double Diffused Metal Oxide Semiconductor VDMOS) 推挽 传输线变压器 负反馈 负载牵引 |
VHF Broadband 80 W Linear Power Amplifier |
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| HUANG Peng,LIU Xiao-jun,FANG Guang-you.VHF Broadband 80 W Linear Power Amplifier[J].Science Technology and Engineering,2009,9(12). |
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| Authors: | HUANG Peng LIU Xiao-jun FANG Guang-you |
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| Institution: | The Key Laboratory of High Power Microwave and Electromagnetic Radiation;The Institute of Electronics;Chinese Academy of Sciences1;Beijing 100190;P.R.China;The Graduate School of Chinese Academy of Science1;Beijing 100039;P.R.China |
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| Abstract: | A VHF broadband high power amplifier is designed for a high-resolution imaging glacier penetrating radar.Combined with push-pull structure and coaxial line transformers,the silicon VDMOS transistor is utilized to produce 80 W linear output power from 50 MHz to 200 MHz.The amplifier is composed of four stages.In every stage the load-pull simulation is made to determine the optimum load impedance and the negative feedback technique is applied to ensure flat gain.The measured result shows that the 1 dB compres... |
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| Keywords: | power amplifier VDMOS push pull coaxial transformer negative feedback load pull |
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