功放线性化技术分析及前馈技术改进设计  

Studies on Power Amplifier Linearization and Improved Feedforward Technology

作　　者：程书田 

机构地区：[1]厦门特力通信息技术有限公司,福建厦门361009

出　　处：《移动通信》2013年第2期62-65,共4页Mobile Communications

摘　　要：分析了表示功率放大器线性的参数——三阶互调产生的机理,给出了几种最常用的提高功率放大器线性的方法,同时分析了这几种方法的优缺点,着重分析了传统的前馈技术所存在的问题,并给出了对传统前馈技术的改进方法。通过实验对比表明,该方法比传统的前馈技术有明显的改进。In this paper, the mechanism of the third-order intermodulation which is a parameter of the linearity of the power amplifier is analysed. Several most commonly used methods to improve the linearity of the power amplifier as well as their advantages and disadvantages are given. The existing problems of the traditional feedforward technology are focused on and an improved method is developed. The results of the tests show that the proposed method has obvious improvement over the traditional feedforward technology.

关 键 词：功率放大器 三阶互调 线性化技术 改进的前馈技术 

分 类 号：TN722[电子电信—电路与系统]