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1、前言相位是微波技术中的一项重要参量。最常用的测相方法有:1)简单而实用的开槽线测相;2)高频替代法测相;3)转移到低频测相。高频替代法测相又有两种类型:一种是两路平衡电桥法;另一种是调制副载波法。以上几种测量方法中,要数高频替代法应用最广泛。本文所述的测相方法亦属高频替代法。但和上述几种测量方法比较有下列优点:
1, Foreword Phase is an important parameter in microwave technology. The most commonly used methods for phase determination are: 1) simple and practical slotted line phase measurement; 2) high frequency alternative method of phase measurement; and 3) transition to low frequency phase measurement. There are two types of high-frequency alternative method to measure the phase: one is two balanced bridge method; the other is modulation subcarrier method. Of the above measurement methods, the number of high-frequency alternative method is the most widely used. The phase measurement method described in this article is also a high-frequency alternative method. However, compared with the above several measurement methods have the following advantages: