Temperature Controlled Predistortion Circuits for 64 QAM Microwave Power Amplifiers
Temperature Controlled Predistortion Circuits for 64 QAM Microwave Power Amplifiers
复制标题
适用于 64 QAM 微波功率放大器的温控预失真电路
DOI：
10.1109/mwsym.1985.1131911
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
F. Oggionni
中科院分区：
文献类型：
--
作者：
M. Nannicini;P. Magni;F. Oggionni
本文研究了数字无线电链路系统中多级调制微波功率放大器的非线性特性问题。64 QAM）;并且特别是参考它们的劣化与温度变化。此外，还考虑了各种可能的补偿方法。在对中频非温控预失真方法进行简要分析后，提出了使非线性特性与热条件无关的解决方案。通过给出实验结果和比较考虑，分析了“反馈控制预失真器”和“预测方法”的使用。
This report deals with the problem of nonlinearity characteristics in microwave power amplifiers for digital radio link systems with multi-level modulation (ex. 64 QAM); and in particular With reference to their degradations vs temperature variations. Moreover various possible methods of compensation are taken into account. After a brief examination of the not temperature controlled predistortion method operating at intermediate frequency, solutions are suggested to keep the non-linearity characteristics independent from thermal conditions. By presenting the experimental results and the comparative considerations, the use of the "feed-back controlled predistorter" and the "predictive method" is analysed.