基于最优匹配网络的宽带功率放大器设计  

Design of a Broadband Power Amplifiers Based on Optimum Matching Network

作　　者：李军[1] 王浪[1] 张碧渊 杨鹏[1] 

机构地区：[1]电子科技大学航空航天学院,成都611731

出　　处：《微电子学》2015年第3期290-293,共4页Microelectronics

基　　金：国家自然科学基金资助项目(60672029)

摘　　要：针对宽带功率放大器的需求,以及传统匹配网络只能用于实现窄带设计的现状,在匹配网络研究的基础上,提出了一种可行的、有效的宽带功率放大器匹配网络的设计方法。基于该方法,对最优匹配网络算法进行Matlab建模,并利用ADS软件进行了仿真和优化,实现了1-2.8GHz宽带功率放大器。对设计的宽带功率放大器进行测试,结果表明,在1-2.8GHz宽频带范围内,增益为27dB,平坦度为±1dB,输入回波损耗小于-10dB,匹配性能明显优于其他类型的拓扑结构。该方法对于设计宽带功率放大器具有良好的应用价值。In accordance with the demand for broadband amplifiers and the situation that traditional matching network can only be used for narrow-band design, a feasible and effective broadband matching network method for power amplifiers was put forward. Based on this method, a broadband power amplifier at the frequency from 1 GHz to 2.8 GHz was designed by Matlab software modeling and ADS software simulating and optimizing. The test results showed that at the broadband of 1-2.8 GHz, the gain achieved 27 dB in the whole frequency range, the flatness was ± 1 dB and the input loss was less than- 10 dB. According to all the dates above, the matching performance was significantly better than other topological structures. This method for the design of broadband power amplifiers had a high value of practical application.

关 键 词：最优匹配算法 功率放大器 宽带匹配 诺顿变换 

分 类 号：TN722[电子电信—电路与系统]