A novel meta-surface-assisted dielectric window with periodically arranged square cross-sectional pillars with a cylindrical tip is presented to demonstrate a wider bandwidth than that without a cylindrical tip. The window bandwidth of 20.11 GHz (54.07%) at allowable return loss of 20 dB is obtained for the operating TE_0,1 mode in the Ka-Q band. The bandwidth of the proposed window is improved with 17.1 GHz and 45.92% in comparison with that of the plane disk window. The window bandwidth is wider by 910 MHz and 1.18% than that for square cross-sectional pillars without a cylindrical tip.

中文翻译：

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超表面辅助超宽带介电窗

提出了一种新型超表面辅助介电窗口，该窗口具有周期性排列的方形横截面柱和圆柱形尖端，以证明比没有圆柱形尖端的带宽更宽。20.11 GHz (54.07%) 的窗口带宽在 20 dB 的允许回波损耗下是在 Ka-Q 频带中的TE _{0,1 工作}模式下获得的。与平面磁盘窗口相比，所提出窗口的带宽提高了 17.1 GHz 和 45.92%。窗口带宽比没有圆柱形尖端的方形横截面柱宽 910 MHz 和 1.18%。