In this paper, a lightweight printed dipole antenna array with 3 × 2 beamforming network for wide unmanned aerial vehicle (UAV) communication coverage is presented. The proposed antenna consists of an upper substrate, a lower substrate, and two supports with a microstrip feeding. The upper substrate has a two-element printed dipole antenna array, and the lower substrate includes a beamforming feeding circuit and a ground plane as a reflector of the proposed antenna array for gain improvement. For wide beam coverage, the proposed feeding network consists of three RF switches, one Wilkinson power divider, and one 90° hybrid coupler, and generates the wide beam using one broadside beam and two end-fire beams. Measured impedance bandwidth, peak gain, and half-power beamwidth (HPBW) of the proposed array operated from 5.03 to 5.15 GHz are approximately 2 GHz, 4.3 dBi, and 155°, respectively.

中文翻译：

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具有 3 × 2 波束成形网络的轻型印刷偶极天线阵列，可实现广泛的无人机通信覆盖

在本文中，提出了一种具有 3 × 2 波束成形网络的轻型印刷偶极子天线阵列，用于广泛的无人机 (UAV) 通信覆盖范围。所提出的天线由一个上基板、一个下基板和两个带有微带馈电的支架组成。上基板有一个二元印刷偶极子天线阵列，下基板包括波束成形馈电电路和接地平面，作为所提出的天线阵列的反射器，以提高增益。对于宽波束覆盖，建议的馈电网络由三个射频开关、一个威尔金森功率分配器和一个 90° 混合耦合器组成，并使用一个宽边波束和两个端射波束生成宽波束。建议阵列的测量阻抗带宽、峰值增益和半功率波束宽度 (HPBW) 在 5.03 到 5 之间运行。