基于圆孔超表面材料的MIMO天线互耦缩减

Mutual Coupling Reduction of MIMO Antenna Based on Circular Hole Metasurface Material

提出一种圆孔超表面结构的超材料,加载在2个偶极子MIMO天线之间以增强天线之间的隔离度。天线工作频率为2.45 GHz,通过对圆孔超表面结构加载在偶极子天线上进行仿真分析,得出一款隔离度比较高的小型化天线。仿真结果表明:在相同频率下加载圆孔超表面结构的偶极子天线的隔离度比未加载的偶极子天线的隔离度提高了8.55 dB,能够更好地提高天线隔离度。

Ametamaterial with a circular hole super-surface structure was proposed.The isolation between the antennas could be greatly enhanced by loading this structure between two dipole MIMO antennas.The main working frequency of the antenna was 2.45 GHz.The circular hole super-surface structure was loaded on the dipole antenna for simulation operation,and finally a miniaturized antenna with relatively high isolation was obtained.The simulation results show that the isolation of the dipole antenna loaded with the super-surface structure of the circular hole at the same frequency is improved by 8.55 dB compared with the dipole antenna without the structure,which achieves a better antenna isolation.