In this article, a dual-layered ultra-wideband hexagonal-shaped patch antenna with an EBG structure is presented for IEEE C, X, Ku and K band applications. Parametric analysis of slots, notches, substrate height, substrate stacking, and EBG structures demonstrates the intermediate and finally optimized results. The proposed antenna (A₉) is considered for desired specifications after a systematic investigation of ten different antennas (A₀–A₉). Experimental ultra-wideband (5.1–19.7 GHz) with an impedance bandwidth (S₁₁ < − 10 dB) of 117.7% and 5.7dBi peak gain is observed for the proposed antenna. A constant group delay in the entire frequency range with a maximum group delay of 0.85 ns at resonating peaks is observed.

在本文中，介绍了一种具有 EBG 结构的双层超宽带六边形贴片天线，适用于 IEEE C、X、Ku 和 K 波段应用。槽、槽口、基板高度、基板堆叠和 EBG 结构的参数分析展示了中间和最终优化的结果。在对十种不同的天线 (A ₀ –A ₉ )进行系统调查后，建议的天线 (A ₉ ) 被认为符合所需的规格。实验性超宽带（5.1-19.7 GHz）阻抗带宽（S ₁₁  < - 10 dB）为 117.7%，峰值增益为 5.7dBi。在整个频率范围内观察到恒定的群延迟，谐振峰值处的最大群延迟为 0.85 ns。