波导终端缝隙对的分析  

Analysis of a Matching Slot Pair in Rectangular Waveguide

作　　者：余春[1] 钟顺时[1] 陈国梁 

机构地区：[1]上海大学电子工程系

出　　处：《通信学报》1997年第6期76-81,共6页Journal on Communications

摘　　要：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。One of the key techniques to reduce termination loss and enhance antenna efficiency in the design of small slotted waveguide arrays is to adopt matching slots. In this paper, an analysis of a matching slot pair, consisting of a longitudinal slot and a transverse slot cut in the broad wall of a rectangular waveguide, is presented. Based on the equivalence principle and the dyadic Green's function, coupled integral equations for the slot pair are established, and are solved numerically. The reflection and the radiation characteristics of the slot pair are calculated. Some curves are presented, including the variation of the magnitude and phase of electric field in slot apertures and the VSWR in waveguide with slot length and frequency. These results can been utilized to design a circularly polarised slotted waveguide array.

关 键 词：缝隙天线 波导 匹配 天线效率 

分 类 号：TN814.02[电子电信—信息与通信工程] TN823.24