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一、前言在微波测试系统中,阻抗调配器是一种很重要的元件。由于传输线的匹配问题是微波技术的最典型问题之一,当显然是不匹配负载与传输线相连接时或将不同特性阻抗的传输线加以连接时,阻抗调配器就成为必不可少的元件了。对于调去测试设备和终端的剩余反射以及对于建立替代测量中的初始匹配条件来说,是非常需要阻抗调配器的。为了保证匹配,必须在两个需要匹配的元件之间加入某种四端网络,它的作用是将负载的规一化无功及有功阻抗之值在阻抗元图上变换至1十jo点上。
I. Introduction In the microwave test system, the impedance adapter is a very important component. Since the matching of transmission lines is one of the most typical problems of microwave technology, an impedance adapter becomes an indispensable component when it is obviously an unmatched load connected to a transmission line or a transmission line of different characteristic impedance. Impedance adapters are very much needed to tune the remaining reflections to test equipment and terminals and to establish the initial match conditions in alternative measurements. In order to ensure the matching, it is necessary to add a kind of four-terminal network between the two components to be matched. Its function is to convert the normalized reactive power and active impedance of the load to 1 × 10 points on the impedance graph .