矢网在脉冲行波管增益测试中的应用研究  

Pulse Travelling Wave Tube Gain Measurement Using VNA

作　　者：刘新爱 邹峰 端木丹丹 王刚 LIU Xin’ai;ZOU Feng;DUANMU Dandan;WANG Gang(Aerospace Information Research Institute Chinese Academy of Sciences,Beijing 101400,China;Beijing Institute of Telemetry,Beijing 100076,China)

机构地区：[1]中国科学院空天信息创新研究院,北京101400 [2]北京遥测技术研究所,北京100076

出　　处：《真空科学与技术学报》2024年第4期350-353,共4页Chinese Journal of Vacuum Science and Technology

摘　　要：分析了脉冲调制下行波管输出信号频域特性,探讨了矢量网络分析仪在脉冲调制信号测试中的应用,设置矢量网络分析仪接收机带宽可实现宽带检测和窄带检测两种测试方法,结合典型脉冲调制信号分析对比了两种检测方法的脉冲退敏效应,分析了脉冲行波管在不同测试方法下的增益特性,最终确立了宽带检测法作为脉冲行波管增益波动的测试方法,实际测试结果验证了矢量网络分析仪宽带检测法更适合测试脉冲行波管增益波动测试。In this paper,the frequency domain characteristics of the traveling wave tube(TWT)output signal based on pulse modulation are analyzed,and the application of the vector network analyzer in pulse-modulated signal testing is discussed.Two methods of wideband detection and narrowband detection can be realized by setting the receiver bandwidth of the vector network analyzer;the pulse desensitization effects of the two detection methods are compared with the analysis of typical pulse modulation signals,the gain characteristics of pulsed TWT under different test methods are analyzed,and the wideband detection method is established as the test method of gain fluctuation of the TWT.The actual test results show that the wideband detection method of the vector network analyzer is more suitable for measuring the gain fluctuation of pulsed TWT.

关 键 词：矢网 脉冲行波管 增益波动 中频带宽 

分 类 号：TN98[电子电信—信息与通信工程]