通信行波管转移特性测试方法  

Measurement Method for Conversion Coefficients of Communication TWTs

作　　者：许茜 XU Qian(Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第十二研究所,北京100015

出　　处：《真空电子技术》2022年第1期51-54,85,共5页Vacuum Electronics

摘　　要：行波管一般作为微波放大器的末级,其性能好坏直接影响到通信整机系统的性能。在测试过程中,由于受到矢量网络分析仪的信号源输出功率和行波管增益限制,多采用固态放大器作为前级放大器推动行波管达到所需功率要求,因此不能直接精确得到行波管自身的特性。采用本测试方法可以去除固态放大器的影响,提高测试行波管的转移特性曲线的准确度。As the final stage of microwave amplifier, the travelling wave tube(TWT) directly affects the performance of communication system. In the test, due to the limitations of signal source output power of vector network analyzer(VNA) and TWT gain, solid-state power amplifier(SSPA) is mostly used as the front amplifierto promote TWT to meet power requirement. Therefore, the characteristics of TWT can not be obtained directly and accurately. This method can removethe impact of SSPA and improve the measurement accuracy of AM/PM and AM/AM.

关 键 词：矢量网络分析仪 行波管 固态放大器 转移特性曲线 

分 类 号：TN124[电子电信—物理电子学]