A new method of designing full-wavelength dipoles (FWDs) is presented. A dual-polarized antenna is built based on FWDs for base station applications as an example. The antenna has four FWDs arranged in a square loop array form. The employed FWDs are bent upward to maintain a small aperture size, so that the realized element still fits in traditional base station antenna (BSA) array. The antenna is first matched across the band from 1.63 to 3.71 GHz, which can cover both the LTE band from 1.7 to 2.7 GHz and the 5G (sub-6 GHz) band from 3.3 to 3.6 GHz simultaneously. Then, band-stop filters are inserted in the feed networks of the antenna to suppress the radiation between 2.7 to 3.3 GHz. The antenna is fabricated and tested. Experimental results validate the simulation results. Comparing with the previously available FWD that has a bandwidth of 32%, the FWD proposed in this article exhibits a much wider bandwidth of 78%. Moreover, this bandwidth is also comparable to and wider than those of the state-of-the-art BSAs based on half-wavelength dipoles (HWDs). The bandwidth enhancement and footprint reduction of the FWD in this article demonstrate a high potential of FWDs to be used in other applications.

中文翻译：

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利用全波长偶极子 (FWD) 为 5G 基站实现更宽的带宽

提出了一种设计全波长偶极子 (FWD) 的新方法。以用于基站应用的 FWD 为基础构建的双极化天线为例。天线有四个以方形环形阵列形式排列的 FWD。采用的 FWD 向上弯曲以保持较小的孔径尺寸，因此实现的元件仍然适合传统的基站天线 (BSA) 阵列。天线首先在 1.63 至 3.71 GHz 的频段内匹配，可同时覆盖 1.7 至 2.7 GHz 的 LTE 频段和 3.3 至 3.6 GHz 的 5G（低于 6 GHz）频段。然后，在天线的馈电网络中插入带阻滤波器以抑制 2.7 至 3.3 GHz 之间的辐射。天线被制造和测试。实验结果验证了模拟结果。与之前可用的带宽为 32% 的 FWD 相比，本文中提出的 FWD 具有 78% 的更宽带宽。此外，该带宽也可与基于半波长偶极子 (HWD) 的最先进 BSA 的带宽相媲美并比其更宽。本文中 FWD 的带宽增强和占用空间减少证明了 FWD 在其他应用中的巨大潜力。