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在小型波导缝隙阵设计中，采用匹配缝隙是减少终端损失、提高天线效率的关键技术之一。本文给出了矩形波导终端匹配缝隙对的分析。该缝隙对是由波导宽壁上的纵缝和横缝构成的。基于等效原理和并矢格林函数建立了缝隙对的耦合积分方程组，然后作数值求解。计算了缝隙对的反射特性与辐射特性，给出了缝隙对口面电场的幅值和相位以及波导驻波比随缝隙长度和频率的变化曲线。本文的计算结果可用于圆极化波导缝隙阵的设计
In the small waveguide slot array design, the use of matching slot is to reduce the terminal loss and improve antenna efficiency, one of the key technologies. In this paper, the analysis of rectangular waveguide termination matching slot pairs is given. The slot pair is composed of longitudinal and transverse slits on the wide wall of the waveguide. Based on the equivalent principle and the dyadic Green’s function, the coupled integral equations of slot pairs are established and then solved numerically. The reflection characteristics and radiation characteristics of the slot pairs were calculated. The amplitude and phase of the electric field at the interface of the slots and the standing wave ratio of the slot with the length and frequency of the slot were given. The calculation results of this paper can be used in the design of circularly polarized waveguide slot array