Staggered array antenna is a common array configuration for large-scale array antennas due to its favorable radiation characteristics and relatively large element spacing. In developing a compact staggered dipole array, the most challenging issue is how to simultaneously reduce the four mutual couplings taking place between adjacent co-polarized antenna elements with diversified phase laggings. A large difference in the phase of different mutual couplings makes simultaneous reduction of all the mutual couplings by applying the recently developed array-antenna decoupling surface (ADS) technique difficult. In this article, a phase compensation method by using a staple-shaped probe for alleviating the largest phase offset is proposed conceptually and verified experimentally. With the proposed phase compensation method, the ADS technique can be effectively applied to a compact staggered dipole array with a wideband simultaneous decoupling. The design guideline for the phase compensation probe is presented by EM simulation and a parametric study. Two practical design examples of dual polarized staggered dipole arrays are given to demonstrate the effectiveness of the proposed phase compensation method in conjunction with ADS, showing a promising potential for wideband simultaneous decoupling of a large-scale dual polarized staggered dipole array-antenna.

中文翻译：

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大规模交错双极化偶极子阵列天线去耦的相位补偿

交错阵列天线由于其良好的辐射特性和相对较大的单元间距，是大规模阵列天线的常见阵列配置。在开发紧凑的交错偶极子阵列时，最具挑战性的问题是如何同时减少相邻的具有不同相位滞后的同极化天线单元之间发生的四个相互耦合。不同互耦相位的巨大差异使得通过应用最近开发的阵列天线去耦表面 (ADS) 技术同时减少所有互耦变得困难。在本文中，从概念上提出了一种利用钉状探针来减轻最大相位偏移的相位补偿方法，并通过实验进行了验证。使用建议的相位补偿方法，ADS 技术可以有效地应用于具有宽带同时去耦的紧凑交错偶极子阵列。相位补偿探头的设计指南是通过 EM 仿真和参数研究提出的。给出了双极化交错偶极子阵列的两个实际设计示例，以证明所提出的相位补偿方法与 ADS 相结合的有效性，显示了大规模双极化交错偶极子阵列天线的宽带同时去耦的潜力。