School of Electronic Science and Engineering, University of Electronic Science and Technology of China, No.4, Section 2, North Jianshe Road, Chengdu 610054, China.
Sensors (Basel). 2018 Aug 17;18(8):2701. doi: 10.3390/s18082701.
A broadband dual-polarized base station antenna with special designed feeding structures is investigated in this paper. The proposed antenna contains two pairs of crossed dipoles, two specially designed feeding connectors, two pieces of dielectric pads, a supporter (also a balun), and a reflector. To verify the designed antenna, a prototype is fabricated and measured. The antenna attains a bandwidth of around 46.5% operating over 3.14⁻5.04 GHz under reflection coefficient lower than -15 dB, and the port-to-port isolation is higher than 32.5 dB. It also achieves very stable radiation patterns with half power beam widths of 71.8° ± 2.5° in both the horizontal and vertical planes and gains of around 8 dBi over its operating band. Besides, the mechanism of the obtained good performances is clearly explained from the angle of current. All of the features ensure that the proposed antenna is suitable for the fifth-generation (5G) mobile communications.
本文研究了一种具有特殊设计馈电结构的宽带双极化基站天线。该天线由两对交叉振子、两个特殊设计的馈电连接器、两个介质垫片、一个支撑物（同时也是巴伦）和一个反射器组成。为了验证所设计的天线，制作了一个原型并进行了测量。该天线在反射系数低于-15dB 时，在 3.14⁻5.04GHz 频段内实现了约 46.5%的带宽，端口间隔离度高于 32.5dB。它还在水平和垂直平面内具有非常稳定的辐射方向图，半功率波束宽度为 71.8°±2.5°，在工作频段内的增益约为 8dBi。此外，还从电流的角度清楚地解释了获得良好性能的机制。所有这些特性都确保了所提出的天线适用于第五代（5G）移动通信。
