本文分析了两个正交矩形波导之间宽壁上窄槽的耦合特性.缝隙对于主波导为纵向槽,对于耦合波导为横向槽,或者相反,槽的位置是任意的.利用等效原理建立一对积分方程组,采用矩量法将其化成矩阵形式并求解,获得散射场和散射参量.介绍了Ku和Ka波段散射参量随频率变化的数据结果,理论与实验值比较,在Ku波段吻合良好,在Ka波段变化趋势相当. In this paper, the coupling characteristics of the narrow slots on the wide walls between two orthogonal rectangular waveguides are analyzed. The slots are either longitudinal slots for the main waveguide or transverse slots for the coupling waveguide or vice versa. The use of the equivalent principle A set of integral equations is obtained by using the method of moment, which is transformed into a matrix form and solved to obtain the scattering and scattering parameters. The data results of the scattering parameters of the Ku and Ka wavebands with frequency are introduced. The theoretical and experimental values ​​are compared, Good, similar trend in Ka band.