In this article, two new ultra‐wideband (UWB) dual‐polarized Bowtie antennas are investigated as the elements for a phased array feed for reflectors. In addition to its UWB impedance matching characteristic, the Bowtie antennas have stable large beam‐width and a low cross‐polar level over a wide frequency band with a compact size, which is an essence for phased array applications. The simulated and measured results state a low ohmic loss, good impedance matching (S₁₁ below −15 dB) and good radiation performance, with a simple structure for easy manufacturing. The proposed antennas can be good candidates for phased array feed (PAF) in FAST and the SKA (square kilometer array) pathfinder PHAROS2 projects, and massive MIMO antennas in wireless communication systems.

中文翻译：

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用于相控阵馈电应用的超宽带领结天线的研究

在本文中，研究了两种新型超宽带（UWB）双极化Bowtie天线，作为反射器相控阵馈电的元件。除了具有UWB阻抗匹配特性外，Bowtie天线还具有紧凑的尺寸，在宽频带上具有稳定的大波束宽度和较低的交叉极化电平，这对于相控阵应用至关重要。仿真和测量结果显示出低欧姆损耗，良好的阻抗匹配（S ₁₁低于-15 dB）和良好的辐射性能，并且结构简单，易于制造。拟议的天线可能是FAST和SKA（平方公里阵列）探路者PHAROS2项目中的相控阵馈电（PAF）以及无线通信系统中大型MIMO天线的良好候选者。