一种新型EBG结构的惠更斯源天线设计

Huygens Source Antenna Design based on Novel EBG Structure

通过在传统边缘金属孔的电磁带隙结构贴片表面引入圆弧环槽,提出了一种新型的小型化EBG(Electromagnetic Band Gap)结构。该圆弧环形槽的引入增大了贴片表面上的电流路径长度,减小了天线的谐振频率。将新型EBG结构与电小惠更斯源天线相结合实现了高方向性。仿真结果表明,该天线降低了0.623 GHz的中心频率,可涵盖GPS的L3频段,增益提高了1.02 d B。

A new type of miniaturized EBG （Electromagnetic Band Gap） structure is proposed by introducing a circular ring groove on the surface of the electromagnetic band gap structure patch of the conventional edge metal hole. The introduction of circular arc groove may increase the length of the current path on the patch surface and reduce the resonant frequency of the antenna. The combination of the new EBG structure and the electric small Huygens source antenna may achieve high directivity. The simulation results indicate that the antenna could reduce the center frequency of 0.623 GHz, cover the L3 band of GPS, and that the gain be increased by 1.02 dB.