重庆邮电学院学报（自然科学版）2006，Vol.18Issue(1)：22-25,4.
WCDMA前馈功放的分析与设计
Analysis and design of a feedforward RF power amplifier for WCDMA applications
摘要
Abstract
A linear power amplifier is particularly emphasized on the system that uses linear modulation method and multicarrier configuration. The feedforward technique is a promising approach to improving the linearity of power amplifiers. The principle of operation of the feedforward power amplifiers is illustrated. Then parameters of a linearization loop, such as an amplitude imbalance, aphase imbalance and a delay mismatch, are fully analyzed to get a specific cancellation performance and linearization bandwidth. Based on the analytical results, a 10-Watt feedforward power amplifier for WCDMA applications is implemented. The third-order intermodulation (IM3) cancellation performance is improved by more than 20 dB.关键词
射频功率放犬器/前馈/互调失真Key words
RF power amplifier/feedforward/intermodulation分类
信息技术与安全科学引用本文复制引用
章秀银,胡斌杰..WCDMA前馈功放的分析与设计[J].重庆邮电学院学报（自然科学版）,2006,18(1):22-25,4.基金项目
This work is supported by grants from specialized Research Fund for the Doctoral Progrom of Higher Education(SRFDP)(20020561024) （SRFDP）
