导频前馈功率放大器线性化技术的研究  

Linearization of Feedforward Power Amplifier Based on Pilot Signal

作　　者：胡建学[1] 宋华山[1] 丁德胜[1] 

机构地区：[1]东南大学电子科学与工程学院,南京210096

出　　处：《电子器件》2007年第3期965-967,共3页Chinese Journal of Electron Devices

摘　　要：为了使前馈功放具有自适应能力,设计了一种基于单片机实现的导频前馈功放.分析了导频前馈功放的工作原理,在此基础上阐述了导频自适应调整的过程,并对可调移相器、可调衰减器的位置进行了讨论.最后介绍了单片机和接口芯片的连接和运行过程.该导频前馈功放不仅具有很高的线性度,而且还具有了自适应能力.In order to get the adaptive ability for the feed-forward power amplifier, this paper presents a design of feedforward power amplifier based on pilot signal with a single-chip microcomputer. At first, the theory of the feedforward based on pilot signal is analyzed. On the base of this analysis, this paper introduces the process of adaptation. The loeation of the variable phase shifter and attenuator is discussed. The end, the circuit of interface is introdueed. The system not only has a very high linearity, but also the ability of adaptation.

关 键 词：前馈 导频 单片机 功放 线性化 

分 类 号：TN722[电子电信—电路与系统]