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一、引言反射桥是七十年代新近发展起来的通信和电子测试仪器,专用于测试两端和四端网络的反射系数或失配衰耗,具有测试迅速、精确度极高的明显优点.但至今尚未见用反射桥来测试网络(包括对称系统、同轴系统、对称电缆和同轴电缆等)的输入阻抗以代替阻抗电桥的繁复测试方法.本文的目的是论述用高频反射桥测试网络输入阻抗,不但可行,而且收到了良好效果.
I. INTRODUCTION Reflective bridge is a newly developed communications and electronic test instrument in the seventies. It is used to test the reflection coefficient or mismatch attenuation of both ends and four ends of the network. It has the obvious advantages of rapid testing and high accuracy. However, To date, no complicated test method has been found to measure the input impedance of the network (including symmetrical systems, coaxial systems, symmetrical cables, coaxial cables, etc.) instead of the impedance bridge with reflective bridges.The purpose of this paper is to discuss the use of high- Network input impedance, not only feasible, but also received good results.