一种时域矢量网络分析仪系统设计  

A System Design of Time-Domain Vector Network Analyzer

作　　者：谢韬 徐文靖 刘永胜 王百泉 王力[2] 陈思宇[2] 师振盛 陈娟[2] 张安学[2] XIE Tao;XU Wenjing;LIU Yongsheng;WANG Baiquan;WANG Li;CHEN Siyu;SHI Zhensheng;CHEN Juan;ZHANG Anxue(Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure of Guangdong Province,China Railway Tunnel Construction Group Co.Ltd.,Guangzhou 511458,China;College of Information and Communication Engineering,Xi’an Jiaotong University,Xi'an 710049,China)

机构地区：[1]中铁隧道局集团有限公司广东省隧道结构智能监控与维护企业重点实验室,广东广州511458 [2]西安交通大学信息与通信工程学院,陕西西安710049

出　　处：《测试技术学报》2022年第5期391-397,425,共8页Journal of Test and Measurement Technology

基　　金：国家自然基金资助项目(61971340);陕西省重点研发计划资助项目(2021GXLH-Z-013)。

摘　　要：针对微波网络在日益复杂的激励状态下瞬态特性的测试需求,本文提出一种时域矢量网络分析仪系统设计,主要由脉冲源模块、超宽带定向耦合器模块和超宽带采样接收模块组成.本文提出一种60 ps量级边沿的超宽带窄脉冲电路,产生系统激励.采用空气介质的厚带渐变耦合带状线方案,实现超宽带定向耦合器设计,分离入射信号和反射信号.利用跟踪保持模块和两级延迟线结构,实现10 ps步进间隔的超宽带采样接收模块设计,无失真采样超宽带窄脉冲信号.在系统测试中,实现了S参数测量、时域瞬态特性测量和故障诊断与定位功能.In order to test the transient characteristics of microwave networks under more complex excitation states, a time-domain vector network analyzer system is proposed. This system is mainly composed of pulse source module, ultra-wideband directional coupler module and ultra-wideband sampling module. In this paper, An ultra-wideband narrow pulse circuit with 60 ps magnitude edge is proposed to generate system excitation. The design of ultra-wideband directional coupler is realized by using the air-medium thick-band gradient coupling stripline scheme and the incident signal and reflection signal could be separated. The ultra-wideband sampling and receiving module with 10 ps step interval is designed to sample ultra-wideband narrow pulse signal without distortion. In the system test, the functions of S-parameter measurement, time-domain transient response measurement and the fault diagnosis and location are realized.

关 键 词：矢量网络分析仪 超宽带 皮秒量级窄脉冲 定向耦合器 等效采样 

分 类 号：TM935[电气工程—电力电子与电力传动]