A Wideband Beamforming Antenna Array for 802.11ac and 4.9 GHz in Modern Transportation Market
A Wideband Beamforming Antenna Array for 802.11ac and 4.9 GHz in Modern Transportation Market
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现代交通市场中适用于 802.11ac 和 4.9 GHz 的宽带波束成形天线阵列
DOI：
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发表时间：
2020
影响因子：
6.8
通讯作者：
M. Imran
中科院分区：
文献类型：
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作者：
Moh Chuan Tan;Minghui Li;Q. Abbasi;M. Imran
在这项工作中，提出了一种新颖的天线结构，它由多个子阵列特征组成，即现场可选波束（90°、180°、270°和360°）和增益选择（11.16、14.59和17.25 dBi），可以轻松适应运输环境中的动态场景。子阵列采用微带贴片天线 (MPA) 概念进行设计，采用电容馈电和双基板堆叠配置，可实现覆盖整个 802.11ac（5.17 至 5.85 GHz 工业科学和医疗 (ISM) 频段）的卓越工作带宽，此外还以 24° 窄方位角波束宽度扩展覆盖 4.92 至 4.98 GHz 许可频段。该子阵列经过设计、仿真和实验评估，波束成形结果表明，该天线结构可以与波束成形概念相结合，在地面基站和移动终端之间提供增强的无线链路，使波束控制能够集中在目标方向上，并以小波束宽度消除干扰方向。预计所提出的可配置增益/波束波束成形天线阵列将进一步降低部署成本，并将抗干扰性能提高两倍，并将把交通市场的用户体验提升到一个新的水平。
In this work, a novel antenna structure has been proposed, which consists of multiple sub-array features i.e., a field selectable beam (90°, 180°, 270°, and 360°) and the choice of gain (11.16, 14.59 and 17.25 dBi) that can be easily adapted to cater for the dynamic scenarios in the transportation environment. The sub-arrays were designed using the microstrip patch antenna (MPA) concept with capacitive feed and dual substrate stacked up configuration for superior operating bandwidth covering the entire 802.11ac (5.17 to 5.85 GHz Industrial Scientific and Medical (ISM) band), in addition to the extended coverage for 4.92 to 4.98 GHz licensed band with narrow azimuth beamwidth of 24°. The sub-array was designed, simulated and experimentally evaluated and the beamforming results revealed that the antenna structure can be integrated with beamforming concepts to provide an enhanced wireless link between the ground base station and the mobile terminals that allows beam steering to focus on the targeted direction and null the interference directions with small beam width. It is expected that the proposed configurable gain/beam beamforming antenna array will further reduce the deployment cost and enhance the anti-interference performance by two-fold, and shall bring the user experience in the transportation market to the next level.