通信学报2012，Vol.33Issue(7)：158-163,6.
射频预失真器与基带预失真算法结合对行波管功率放大器线性化改善的影响
Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm
胡欣 1王刚 2王自成 3罗积润3
作者信息
- 1. 中国科学院电子学研究所高功率微波源与技术重点实验室,北京100190
- 2. 中国科学院研究生院,北京100039
- 3. 中国科学院电子学研究所空间行波管研发中心,北京100190
- 折叠
摘要
Abstract
In order to keep Che adaptive digital predistortion algorithms valid,usually the output power level of the TWTA must be reduced,which corresponded a reduced efficiency of the TWTA. A predistortion technique was proposed by combining RF predistortion linearizer with adaptive digital predistortion algorithm,The gain and phase change of the TWTA with a RF predistortion linearizer circuit from small-signal input drive to saturated input drive were improved,respectively. Then the adaptive digital predistortion algorithm was used for the TWTA with the RF predistortion linearizer. The good linearity improvement can be reached with the less reduction for the output power level with this method.关键词
行波管功率放大器/非线性失真/基带预失真/射频预失真Key words
TWTA/nonlinear distortion/digital predistortion/RF predistortion分类
信息技术与安全科学引用本文复制引用
胡欣,王刚,王自成,罗积润..射频预失真器与基带预失真算法结合对行波管功率放大器线性化改善的影响[J].通信学报,2012,33(7):158-163,6.
