Abstract A 3 × 3 slotted circular Electromagnetic Band gap based Metasurface (SCEBG-MS) has been presented in this article, which enhances the performance of a circularly polarized (CP) patch antenna by improving its impedance bandwidth, axial ratio bandwidth and gain. The proposed antenna is having a low profile of 0.065 λ o (λ o is the free-space wavelength at center frequency of 6.16 GHz) with ground size selection of 30 × 30 mm. The prototype antenna achieves a measured −10 dB impedance bandwidth of 37% (5.02–7.30 GHz) and measured 3-dB axial ratio bandwidth of 5.9% (5.24–5.56 GHz). Furthermore, the antenna yields a good peak gain of 6.6 dBic in the CP bandwidth which makes it a promising candidate for Wireless Local Area Network (WLAN) applications. Experimental results obtained from the fabricated prototype closely matched with the simulated results.

中文翻译：

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使用基于开槽圆形 EBG 的超表面增强圆极化贴片天线的性能

摘要 本文提出了一种基于 3 × 3 开槽圆形电磁带隙的超表面 (SCEBG-MS)，它通过改善圆极化 (CP) 贴片天线的阻抗带宽、轴比带宽和增益来提高其性能。建议的天线具有 0.065 λ o 的低剖面（λ o 是中心频率为 6.16 GHz 的自由空间波长），地面尺寸选择为 30 × 30 mm。原型天线实现了 37% (5.02–7.30 GHz) 的测量 -10 dB 阻抗带宽和 5.9% (5.24–5.56 GHz) 的测量 3-dB 轴比带宽。此外，该天线在 CP 带宽中产生了 6.6 dBic 的良好峰值增益，这使其成为无线局域网 (WLAN) 应用的有希望的候选者。