In this article, a 2×2 broadband circularly polarized antenna array using the sequential rotation (SR) technique in the feed network is presented. This antenna covers the 5G-band of 3.5–3.6 GHz and 4.8–4.9 GHz. So, it can be used for 5G-band communication [1]. The performance of the antenna is obtained by simulation and experiment, as follows: the bandwidth of S11 parameter below -10 dB is 3.7 GHz (3.3–7 GHz), and AR bandwidth (AR < 3 dB) is 2.4 GHz (3.5–5.5 GHz and 5.8-6.2 GHz ), the maximum gain is about 10.2 dBi, and the gain is greater than 0 dBi in the range of 3.6–6.5 GHz.

中文翻译：

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采用应用于5G频段的顺序相位馈电结构的宽带圆极化天线阵列

在本文中，介绍了在馈电网络中使用顺序旋转 (SR) 技术的 2×2 宽带圆极化天线阵列。该天线覆盖 3.5-3.6 GHz 和 4.8-4.9 GHz 的 5G 频段。因此，它可用于 5G 频段通信 [1]。天线的性能通过仿真和实验得到，如下：-10 dB以下S11参数的带宽为3.7 GHz（3.3-7 GHz），AR带宽（AR < 3 dB）为2.4 GHz（3.5-5.5 GHz 和 5.8-6.2 GHz )，最大增益约为 10.2 dBi，在 3.6-6.5 GHz 范围内增益大于 0 dBi。