本文简述了现有文献资料对波导双T四端口网络匹配问题的处理方法,指出其局限性。本文提出用图解法解决波导双T四端口网络的匹配问题,论述了所依据的基本原理及设计方法。又列举了几种用图解法设计的匹配双T,简述了用扫频测试系统进行调试的方法,给出了测试结果,可以看出比现有资料的匹配明显地加大了带宽。 In this paper, we briefly describe the existing methods to deal with the problem of network matching of dual-T four-port waveguide, and point out its limitations. This paper proposes to solve the matching problem of waveguide dual-T four-port network by using graphic method, and discusses the basic principle and design method based on it. Also listed several graphical matching method to match the double T, a brief description of the test method with the frequency sweep test system, given the test results, we can see that the match than the existing data significantly increased the bandwidth.