本文介绍一种分米波段宽频带和差器的设计,给出了频带内的驻波比、隔离度的理论和实验曲线。在几种跟踪系统中的应用表明,这种和差器的性能良好。 This paper presents a design of broadband and differential in the decimeter band. The theoretical and experimental curves of standing wave ratio and isolation in the frequency band are given. The application in several tracking systems shows that the performance of this sum difference is good.