行波管线性化器的仿真研究及优化  

Simulation Investigation and Optimization of a Linearization Technique of the Traveling Wave Tube Amplifier

作　　者：周汝派[1] 秦开宇[1] 陈长伟[1] 

机构地区：[1]电子科技大学空天科学技术研究院,四川成都610054

出　　处：《电子质量》2010年第3期30-32,40,共4页Electronics Quality

摘　　要：根据某行波管的测试数据,对其参数进行提取和建模;通过级联网络理论,推出与此行波管匹配用的线性化器的模型,并对此模型分别进行增益和相位优化,使得级联后的三阶交调特性最优。仿真结果表明,线性化器经过优化后,级联系统的三阶交调比优化前多改善了23.15dbc。Based on a traveling wave tube test data, the parameter extraction and modeling of traveling wave tube amplifier（TWTA） have been studied; through the cascade network theory, a linearization model matched with this TWTA has been proposed, then the model is optimized from amplitude and phase respectively, making linearization of TWTA optimal. The simulation results show that, optimized linerization technique makes the third-order intermodulation of cascade system 23.15dbc less than before.

关 键 词：行波管 预失真 非线性 三阶交调 

分 类 号：TN124[电子电信—物理电子学]