基于开口谐振环的微带天线互耦抑制研究

摘要

An effective mutual coupling suppression method is proposed in microstrip antenna array based on Split Ring Resonators (SRR).Two coplanar microstrip antennas work in 6 GHz are designed.In order to enhance its degree of isolation,the SRR structure is added into the antenna array units.Since the structure has the proper-ty of band elimination,the mutual coupling between antenna units is reduced effectively.Moreover,the microstrip array antenna is simulated and optimized by HFSS.It was possible to achieve a 10-dB reduction in the mutual coupling using the new structure,which indicates that this structure is effective in reducing mutual coupling.%提出了一种通过加载开口谐振环隔离板来抑制微带天线阵元之间耦合的方法。首先设计了一款工作频率在6GHz的微带天线阵，然后在其阵列单元间加载单环SRR隔离板结构。该结构在特定频段具有带阻特性，可以有效抑制天线单元间的互耦，增加天线单元间的隔离度。最后利用HFSS软件进行了仿真与优化。仿真结果证明：该结构的引入能使微带天线单元间的互耦因子降低10dB左右，体现了较好的互耦抑制特性。