ABSTRACT It has been shown that the Hilbert curved electromagnetic band gap (HC-EBG) structure effectively reduces the surface wave excitation in the substrate. This paper investigates the performance of HC-EBG structure for probe-fed microstrip patch phased array antenna. The results show that not only the mutual coupling between two elements is reduced about 20 dB, but also the blind angle is removed. Based on the proposed method, a probe-fed microstrip patch antenna phased array 9 × 7 elements are designed and simulated that shows the blind angle has been eliminated without increasing the dimensions of the antenna. Simulation results show improvement in the active reflection coefficient of center element and gain of the array.

中文翻译：

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基于四阶希尔伯特曲线EBG结构去除相控阵天线扫描盲区

摘要已经表明，希尔伯特弯曲电磁带隙 (HC-EBG) 结构有效地减少了基板中的表面波激发。本文研究了探针馈电微带贴片相控阵天线的HC-EBG结构性能。结果表明，不仅两个元件之间的相互耦合降低了约20 dB，而且消除了死角。基于所提出的方法，设计并仿真了一个探针馈电微带贴片天线相控阵 9 × 7 单元，表明在不增加天线尺寸的情况下消除了死角。仿真结果表明，中心元件的有源反射系数和阵列增益都有所提高。