基于Doherty技术的RF高效率大功率放大电路的设计与分析  

Design and analysis of large-power RF amplifier circuit with high efficiency based on Doherty technology

作　　者：宋汉斌[1] 陈晓光[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《电路与系统学报》2008年第6期96-102,共7页Journal of Circuits and Systems

摘　　要：基于可以有效提高放大器效率的Doherty技术,本文提出并实现了大功率射频放大电路的设计方法。采用摩托罗拉公司的MRF23140芯片,运用Pspice、Protel、ADS(Advanced Design System)等开发软件,实现了包括直流偏置电路、保护电路、匹配滤波电路、负载牵引电路以及射频放大电路在内的整体设计,并给出了对系统增益、系统效率、系统电流分布、回波损耗等指标的仿真结果。Based on Doherty technology which improves the efficiency of amplifiers evidently, a design scheme of large-power amplifier is presented in this paper. MRF23410 chips and the software such as Pspice, Protel, ADS are applied to realization of modules including DC bias circuit, protection circuit, matching and filter circuit, load-pull circuit and RF amplifier circuit. Simulation results of system gain, efficiency, current distribution and return loss are provided at last.

关 键 词：射频放大器 DOHERTY 系统效率 MRF23140 

分 类 号：TN722.75[电子电信—电路与系统]