基于多谐波双向牵引技术的微波功率放大器设计  

Design of Microwave Power Amplifier Based on Multi-Harmonic Bilateral-Pull Technology

作　　者：陈会[1] 张玉兴[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《微波学报》2008年第3期57-60,70,共5页Journal of Microwaves

基　　金："十一五"国防预研基金(51307060202)

摘　　要：功率放大器的输出功率和附加效率是设计的重点和难点,而功放设计通常采用的是负载牵引技术,强调了负载阻抗对电路输出功率和效率的影响,却常常忽略了源阻抗对它的影响。文中结合实例,介绍了基于谐波平衡分析的多谐波双向牵引优化技术的原理和实现方法。优化源和负载各谐波阻抗,仿真和实测结果表明:多谐波双向牵引优化技术能够在获得功率放大器所需的最大输出功率和最佳附加效率之间取得折中和平衡,从而满足工程设计指标要求。It is well-known that it is important and difficult for the designer to design a power amplifier maximum output power and additive power efficiency. However, it is conventional to use the load-pull technology that imposes the load impedance on the effects of output power and added power efficiency. Consequently, the source impedance is seldom considered. In this paper, it is introduced to a basic operational principle and implemental approach using the multi-harmonic bilateral-pull optimum technology based on the harmonic balance analysis. By optimizing the source and load harmonic impedances with the CAD simulation, it is shown that the designer can obtain the trade-off and balance on the maximum output power and best optimal additive efficiency for a power amplifier.

关 键 词：双向牵引 多谐波 优化技术 功率放大器 谐波平衡 

分 类 号：TN722.75[电子电信—电路与系统]