宽带前馈功率放大器设计

Design of Broadband Feedforward Power Amplifier

目前,无线通信系统对发射机的带宽和线性度提出了更高的要求,前馈线性化技术是满足需求的唯一技术。本文首先对比了目前主流的几种线性化技术的优缺点,然后对宽带前馈线性化技术的关键原理进行了分析并针对工程应用做了设计优化,一定程度提高了效率。

At present,wireless communication system requires better band width and linearity of transmitter,and feedforward linearization is the only technology to meat the demand.In this paper,the advantaged and disadvantages of several mainstream linearization technologies are compared at first,then the key principles of broadband feedforward linearization technology are analyzed and optimized for engineering application,which improves the efficiency to certain extent.