EBG结构在介质覆层波导缝隙相控阵中的应用  

Application of EBG structures in waveguide end-slot phased arrays under a dielectric sheet

作　　者：陈亮[1] 党晓杰[1] 梁昌洪[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,陕西西安710071

出　　处：《电波科学学报》2008年第1期115-118,145,共5页Chinese Journal of Radio Science

基　　金：973重大项目基金资助(00300113)

摘　　要：针对加载天线罩对于波导端头缝隙相控阵的天线性能和扫描盲点起到的恶化作用,提出了在阵面缝隙单元间加载EBG周期单元结构的方案,该方案结合了加载天线罩阵列缝隙之间的耦合特性以及EBG周期结构的抑制表面波特性,通过典型实例的数值仿真验证,消除了加载天线罩阵列的扫描盲点,展宽扫描范围,改善了天线阵的性能。A method of loading EBG periodic structures between the slots of arrays is presented for solving the radome loading＇s destructive influence on the performance of rectangular waveguide end-slot phased arrays and its scanning blindness. This method combines the couple properties between the slots of arrays loaded radome and properties of suppressing surface-wave by EBG periodic structures. The simulation results from examples provided show that the method can remove the scanning blindness, broaden the scanning range and improve the performance of antenna arrays.

关 键 词：矩形波导端头缝隙相控阵 扫描盲点 介质天线罩 高阻表面 

分 类 号：TN82[电子电信—信息与通信工程]