一种应用于Ka频段空间行波管放大器的宽带线性化器  

A Broadband Linearizer for Ka Band Satellite TWTA

作　　者：周斌[1] 黄微波[1] 范培云[1] 

机构地区：[1]中国空间技术研究院西安分院,陕西西安710100

出　　处：《真空电子技术》2014年第3期65-67,共3页Vacuum Electronics

摘　　要：为了降低行波管放大器(TWTA)的非线性,介绍了一种采用传输拓扑的宽带二极管预失真线性化器的设计。分析了用于补偿TWTA非线性的线性化器增益和相位扩张特性。测试结果表明,在19.5~21.3 GHz频率范围内,TWTA的交调指标得到改善。In this paper,a broadband diode predistortion linearizer with transmitted structure is designed to reduce nonlinearity of Traveling Wave Tube Amplifier(TWTA). Nonlinear characteristics of linearizer are analyzed,such as gain expansion and phase shift to compensate the gain compression and the phase variation of the TWTA.The test results show that,the carrier-to-intermodulation ratio( C /I) of Ka band TWTA were improved inthe frequency range from 19. 5 to 21. 3 GHz.

关 键 词：宽带 预失真线性化器 传输拓扑 行波管放大器 增益压缩 相移 交调 

分 类 号：TN722[电子电信—电路与系统]