A dual‐polarized antenna for the fifth‐generation (5G) array/massive multiple‐input multiple‐output (MIMO) communications is proposed in this paper. Through combining dual‐polarized differentially feeding structure and complementary magneto‐electric (ME) dipole antenna, low cross polarization (X‐pol), high gain, and isolation characteristics can be achieved by the antenna element. To take advantage of these characteristics in the array, a modified 1‐to‐16‐way H‐shaped differentially feeding network is designed to feed the 16‐element antenna array. Here, vertical cross‐shaped patches with dotted slots are arranged between adjacent ME‐dipole antenna elements to further improve the array isolation. By removing the H‐shaped differentially feeding network and the substrate at the bottom, a high‐capacity MIMO antenna system can be achieved. Measured results show that low X‐pol level of −35.7 dB and high gain of larger than 8.1 dBi can be attained by the antenna elements across the 5G frequency bands (3.3‐5.1 GHz). In addition, the antenna array has exhibited high gain of 17.3 dBi and the MIMO antenna has realized very low envelope correlation coefficient of 0.004.

中文翻译：

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具有低交叉极化，高增益和隔离的双极化天线，用于第五代阵列/多输入多输出通信

本文提出了一种用于第五代（5G）阵列/大规模多输入多输出（MIMO）通信的双极化天线。通过将双极化差分馈电结构与互补磁电（ME）偶极天线相结合，可以通过天线元件实现低交叉极化（X-pol），高增益和隔离特性。为了利用阵列中的这些特性，设计了一种改进的1至16路H形差分馈电网络来馈电16元素天线阵列。此处，在相邻的ME偶极天线元件之间安排了带有点缝的垂直十字形贴片，以进一步改善阵列隔离度。通过去除H型差动馈电网络和底部的基板，可以实现大容量的MIMO天线系统。测量结果表明，天线元件在5G频带（3.3-5.1 GHz）上可以实现-35.7 dB的低X-pol电平和大于8.1 dBi的高增益。此外，天线阵列展现出17.3 dBi的高增益，而MIMO天线实现了0.004的非常低的包络相关系数。