This article presents a high gain cavity‐backed slot antenna using a perfect magnetic conductor (PMC) ground plane and multilayered superstrates. A textured surface of periodic pins is applied to realize a high impedance surface (HIS), which simulates a PMC ground plane. The main advantage of using this structure is to suppress the surface wave propagation, improve the input impedance matching, increase the bandwidth, control the side‐lobe levels, and also provide higher gain. Moreover, the multilayered superstrates has been used to enhance the antenna gain. The simulations and measurements for the S‐parameter, gain, and radiation patterns of the antenna are presented. The proposed cavity‐backed slot antenna offers a maximum gain of 18 dBi and an impedance bandwidth of 16.5% at 11.5 GHz.

中文翻译：

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高增益腔隙缝隙天线，使用完美的磁导体接地层和多层覆层

本文介绍了一种使用完美磁导体（PMC）接地层和多层覆板的高增益背腔式缝隙天线。应用周期性引脚的纹理化表面以实现高阻抗表面（HIS），该表面可模拟PMC接地平面。使用这种结构的主要优点是抑制表面波传播，改善输入阻抗匹配，增加带宽，控制旁瓣电平并提供更高的增益。而且，多层覆盖物已被用于增强天线增益。给出了天线的S参数，增益和辐射方向图的仿真和测量结果。拟议中的后腔缝隙天线在11.5 GHz时可提供18 dBi的最大增益和16.5％的阻抗带宽。