This paper presents a high performance circularly polarized multiple input multiple output microstrip patch antenna which is suitable for current high data rate requirements. Circular polarization has been achieved by dual feeding the signals in phase quadrature to the patch antenna. A polarization independent metamaterial has been designed. The designed metamaterial is used to enhance the gain of the antenna and used as a superstrate of this patch antenna. Using metamaterial superstrate, a gain as high as 13.6 dBi with a bandwidth of 15.4% has been achieved at 11 GHz. The structure has been fabricated and the simulated results are in good agreement with the measured results. Circular polarized antenna also reduces the delay spread due to multipath environment and provides high latency.

本文提出了一种高性能的圆极化多输入多输出微带贴片天线，适用于当前的高数据速率要求。通过将相位正交的信号双重馈送到贴片天线，可以实现圆极化。已经设计了偏振无关的超材料。设计的超材料用于增强天线的增益，并用作该贴片天线的覆层。使用超材料覆盖层，在11 GHz时可实现高达13.6 dBi的增益和15.4％的带宽。已经制造出结构，模拟结果与实测结果吻合良好。圆极化天线还减少了由于多径环境而引起的延迟扩散，并提供了高延迟。