This article presents a single-polarization and ultrawideband tightly coupled dipole array (TCDA) with a compact, single-layer feeding network, and a superstrate layer for wide-angle scanning. The feeding network based on a microstrip-to-slotline structure can significantly reduce the size and complexity of the array. The superstrate layer consists of two frequency selective surfaces (FSSs), which can efficiently increase the scanning angle. The single-polarization TCDA has a bandwidth of 5.13:1 (0.75–3.85 GHz) with the simulated active VSWR < 3 in an infinite array. The scanning angle of the TCDA reaches up to ±60° in all planes and ±70° in the E-plane and D-plane. The profile of the fabricated TCDA with $16\times16$ elements is only $0.12\lambda $ at the largest working wavelength. The measured results of a subset of the array are consistent with the simulated.

中文翻译：

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具有紧凑型单层馈电网络的超宽带、广角扫描阵列

本文介绍了一种单极化和超宽带紧耦合偶极子阵列 (TCDA)，它具有紧凑的单层馈电网络和用于广角扫描的覆盖层。基于微带槽线结构的馈电网络可以显着降低阵列的尺寸和复杂度。覆盖层由两个频率选择表面（FSS）组成，可以有效地增加扫描角度。单极化 TCDA 具有 5.13:1 (0.75–3.85 GHz) 的带宽，在无限阵列中模拟有源 VSWR < 3。TCDA 的扫描角度在所有平面上达到±60°，在E 平面和D 平面上达到±70°。制造的 TCDA 的轮廓与 $16\times16$ 元素只是 $0.12\lambda $ 最大工作波长。阵列子集的测量结果与模拟一致。