本文介绍一种设计宽带高方向性定向耦合器的数值方法。此法经扩展后,可用以解决一系列与此类似的问题,还可以把计算结果编制成设计手册,以便于使用。 This paper presents a numerical method for designing broadband directional coupler with high directivity. This method can be used to solve a series of similar problems after it is extended. The calculation result can also be compiled into a design manual for ease of use.