基于等效磁表面的层叠型介质谐振器天线

提出了一种基于等效磁表面的层叠型介质天线,同时具有宽带和高增益等特点。设计采用两片高介电常数的薄介质片,构造出两个等效磁表面,结合金属地的等效电表面,可以在“电-磁"以及“磁-磁"的边界条件中获得两个独立的TE^y₁₁₁ 模式。通过合并这两个模式可以有效拓展天线的工作带宽,同时,等效磁表面的引入还可以提高天线的增益。天线的仿真和测试结果一致性良好,其|S11|<-10 dB 的相对带宽约为36%,最大增益在6.3 GHz 处达到8.4 dBi。另外,该天线的辐射单元均由低损耗的介质构成,辐射效率高,使其在未来无线通信系统中具备一定的应用前景。

A Stacked Dielectric Resonator Antenna Based on Equivalent Magnetic Surface

A stacked dielectric antenna based on equivalent magnetic surface with wide bandwidth and high gain is proposed in this paper. In this design, two resonant TE^y ₁₁₁ modes, one located between the ground plane and high permittivity ceramic sheet, and the other formed between the two high permittivity ceramic sheets, can be simultaneously excited and thereby constitute a wide bandwidth and high gain. Measured results are in good agreement with the simulated results, which show that the antenna achieves an impedance bandwidth of about 36% ( |S11|<-10 dB), with a peak gain of 8.4 dBi at 6.3 GHz. The radiation element of the antenna is made of low loss dielectric material, thus having high radiation efficiency, making it a suitable candidate for future wireless communication systems.