In this work, a broadband high gain frequency selective surface (FSS)-based microstrip patch antenna is proposed. The dimensions of the microstrip antenna and proposed FSS are 22mm×22mm×1.6mm and 60.8mm×48.6mm×1.6mm. A broadband high gain reference antenna has been selected to improve antenna performance. The reference antenna offers 1.2GHz bandwidth with 6.03dBi peak gain. Some modifications have been done on the patch and ground plane to enhance the bandwidth and gain. The impedance bandwidth of 7.70GHz (3.42–11.12GHz) with 4.9 dBi peak gain is achieved by the microstrip antenna without FSS. The antenna performance is improved by using FSS beneath the antenna structure. The maximum impedance bandwidth of 7.70GHz (3.32–11.02GHz) and peak gain of 8.6dBi are achieved by the proposed antenna with FSS. Maximum co- and cross-polarization differences are 21dB. The simulation and measurement have been done using Ansoft Designer software and vector network analyzer. The measured results are in good parity with the simulated one.

中文翻译：

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一种用于 WiMAX/WLAN/ISM/X 波段应用的新型小型 FSS 宽带高增益微带贴片天线

在这项工作中，提出了一种基于宽带高增益频率选择表面（FSS）的微带贴片天线。微带天线的尺寸和建议的 FSS 是22毫米×22毫米×1.6毫米和60.8毫米×48.6毫米×1.6毫米. 已选择宽带高增益参考天线来提高天线性能。参考天线提供 1.26.03 GHz 带宽dBi 峰值增益。对贴片和接地平面进行了一些修改，以提高带宽和增益。阻抗带宽为 7.70GHz (3.42–11.12GHz）具有 4.9 dBi 峰值增益是由没有 FSS 的微带天线实现的。通过在天线结构下方使用 FSS 可以提高天线性能。最大阻抗带宽 7.70GHz (3.32–11.02GHz) 和 8.6 的峰值增益dBi 是通过所提出的带有 FSS 的天线来实现的。最大同极化和交叉极化差为 21D b。使用 Ansoft Designer 软件和矢量网络分析仪进行了仿真和测量。实测结果与模拟结果非常吻合。