In this paper, a wideband dual‐polarized magneto‐electric (ME) dipole antenna with modified electric‐dipole structure is proposed based on the cost‐effective printed circuit board (PCB) technology for millimeter‐wave (mmW) applications. A 3D‐meandered electric‐dipole design is adopted to enlarge the operating bandwidth without increasing the physical volume and footprint of the antenna structure. The developed dual‐polarized antenna element demonstrates a wide overlapped impedance bandwidth of 54.5%, a decent isolation no less than 22 dB as well as stable radiation characteristics over the frequency band of interest. For proof‐of‐concept demonstration, a 2 × 2 dual‐polarized ME‐dipole array is designed, implemented, and measured. An overlapped impedance bandwidth of 46.3% (24.1–38.6 GHz), a gain up to 13 dBi, and nearly symmetric radiation patterns in the two main planes are experimentally obtained. The proposed dual‐polarized antenna array possesses the advantages of wide operational band, low cost, ease of integration, and stable radiation characteristics that would be of interest for mmW applications.

中文翻译：

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毫米波应用的宽带双极化磁电偶极天线

本文基于具有成本效益的毫米波（mmW）应用印刷电路板（PCB）技术，提出了一种具有改进的电偶极结构的宽带双极化磁电（ME）偶极天线。采用3D弯角电偶极子设计来扩大工作带宽，而不会增加天线结构的物理体积和占位面积。研发的双极化天线元件具有54.5％的宽重叠阻抗带宽，不小于22 dB的体面隔离以及在所关注频段上的稳定辐射特性。为了进行概念验证演示，设计，实施和测量了2×2双极化ME偶极子阵列。重叠阻抗带宽为46.3％（24.1–38.6 GHz），增益高达13 dBi，通过实验获得了两个主平面中几乎对称的辐射方向图。所提出的双极化天线阵列具有工作频带宽，成本低，易于集成以及稳定的辐射特性等优点，这些特性是mmW应用所关注的。