一种新型双频微带反射阵的设计  

Design of a novel dual band microstrip reflectarray

作　　者：郑文泉[1] 万国宾[1] 甘启宇 赵雨辰[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《电波科学学报》2014年第6期1057-1062,共6页Chinese Journal of Radio Science

摘　　要：设计了一种新型双频微带反射阵.该反射阵采用上层为Ka波段阵面、下层为X波段阵面的双层结构,阵列单元由圆与圆环组合单层结构构成.在此基础上,分别选择圆环贴片型和方环缝隙型频率选择表面作为上下两层阵面的接地板,并与传统导体接地板反射阵作比较分析.仿真结果表明:采用频率选择表面作为接地板,不仅使反射阵天线获得较好的双频辐射特性,同时可有效地降低两个阵面之间的相互影响.A novel dual band microstrip reflect array is presented. The reflectarray is designed for the X and Ka bands with high-frequency elements above low frequency ele- ments, and a circular patch with a circular ring is developed as the cell element to a- chieve dual band performance. Two different structures of frequency selective surface （FSS）, composed of the circular loop and square ring slot respectively, are designed to replace the conductor groundplane for both bands. Prototypes of these reflectarrays are simulated and analyzed. The results demonstrated that for an optimum design, the FSS- backed reflectarray has a good performance compared to its counterpart backed by a con- ductor groundplane, while the interact between elements of two bands could be mini- mized.

关 键 词：双频微带反射阵 频率选择表面 相互影响 

分 类 号：TN82[电子电信—信息与通信工程]