基片集成波导背腔式缝隙天线设计  

A Design of Cavity Backed Slot Antenna Based on Substrate Integrated Waveguide

作　　者：庞维建 童创明[1,2] 张亮 

机构地区：[1]空军工程大学防空反导学院 [2]毫米波国家重点实验室 [3]94907部队

出　　处：《空军工程大学学报（自然科学版）》2014年第2期45-48,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：陕西省自然科学基础研究计划资助项目(2011JM8025);毫米波国家重点实验室基金资助项目(K201201)

摘　　要：利用谐振腔形成对称场激励,设计实现了一种基于多层基片集成波导技术的背腔式缝隙天线,并对其辐射特性进行了仿真研究。该天线利用双层基片集成波导实现了天线的馈电电路和背腔结构,利用工作于谐振状态的基片集成波导谐振腔对缝隙进行激励,同时通过加载缝隙圆环,显著降低了天线的回波损耗,并具有剖面低、重量轻、易集成的优点。研究了缝隙圆环对天线辐射性能的改善作用,制成了测试样片,天线-10dB回波损耗的带宽为150MHz,最高增益为8dB,交叉极化增益的最高为-12dB,测量结果与仿真分析吻合较好,验证了设计方法的有效性。A novel cavity backed slot antenna based on multi-layer substrate integrated waveguide is de- signed and manufactured by utilizing the resonant cavity to form symmetrical field excitation, and its radi- ation characteristic is studied and simulated. The proposed antenna using double -layer SIW to realize its feeding circuit and cavity structure has the advantage of low profile, light weight and convenient integra- tion. The promoting effect of ring-slot structure on the radiation performance is considered. Finally, the test structure with a bandwidth of --10 dB return loss at 150 MHz is manufactured. And the maximum gain is 8 dB, and the maximum cross-polarized radiation is --12 dB. The good agreement between the measured results and the simulated results demonstrates that the design method is effective.

关 键 词：多层基片集成波导 缝隙天线 背腔式 回波损耗 

分 类 号：TN823.24[电子电信—信息与通信工程]