高效率F类功率放大器设计  

Design of high-efficiency class-F power amplifier

作　　者：王程[1] 于洪喜[1] 

机构地区：[1]中国空间技术研究院西安分院,陕西西安710100

出　　处：《现代电子技术》2014年第9期77-79,82,共4页Modern Electronics Technique

摘　　要：F类功率放大器是一种高效率的放大器,其理论效率可以达到100%,在无线通信领域中有着广泛的应用和广阔的发展前景。简要阐述了F类放大器的基本理论,并对其效率进行了分析。设计出了带有输入输出谐波控制的高效率F类功率放大器,仿真结果表明在工作频率1 GHz时,输出功率为38 dBm,功率附加效率为74%;输出功率和功率附加效率都优于同条件下的B类功率放大器。The class-F power amplifier（PA）is a high-efficiency amplifier,whose theoretical efficiency can achieve 100%. It is widely used in wireless communication field and has a broad prospect. The basic theory of the class-F power amplifier is in-troduced and its efficiency is analyzed. A high-efficiency class-F power amplifier with input and output harmonic control was de-signed. The simulation result shows that the maximum power-added-efficiency（PAE）of 74% with 38 dBm output power can be achieved at 1 GHz,and under the same condition,it is better than class-B power amplifier in both PAE and output power.

关 键 词：F类功率放大器 高效率放大器 负载牵引法 无线通信 

分 类 号：TN722-34[电子电信—电路与系统]