摘要
回顾了一些用于微波单级功率放大器的传统技术方案,讨论了各自的优缺点。从电路模块的角度,总结了若干兼顾功放线性度和效率指标的典型电路拓扑形式,包括Doherty电路、包络消除与恢复(EER)技术、LINC技术等,并总结了当前主要采用的基于电路系统层面的微波射频功放线性化方案。在此基础上,列举评点了文献中一些典型功放的电路特点和性能指标,可为设计和制造人员提供有益参考。
As wireless communication market increases,monolithic integrated microwave/RF power amplifier（MMIC PA） plays a more and more important role in 3G and/or 4G systems.Traditional circuits used in mono-stage amplifiers are reviewed,together with their pros and cons.Architectures,such as the Doherty circuitry,EER（Envelope Elimination and Restoration） technology,LINC,etc.,are also discussed.Generally,these technologies may be used to improve linearity and efficiency of microwave power amplifier.Currently,some system-level linearization techniques have also been utilized.The overview may serve as a useful groundwork for those who are designing MMIC PAs.
出处
《微电子学》
CAS
CSCD
北大核心
2011年第4期594-598,共5页
Microelectronics
