Design and Simulation of UWB Phased Array Antenna For Wireless Power Transfer to Micro Aerial Vehicle (MAV) Through Beam Steering
Design and Simulation of UWB Phased Array Antenna For Wireless Power Transfer to Micro Aerial Vehicle (MAV) Through Beam Steering
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通过波束控制向微型飞行器 (MAV) 进行无线电力传输的 UWB 相控阵天线的设计和仿真
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发表时间：
2022
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通讯作者：
I. Mahbub
中科院分区：
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作者：
A. B. Patwary;I. Mahbub
基于微波束辐射的远场无线输电 (WPT) 可在更远的距离内以更小的衰减提供电力。这可以用来为无人驾驶微型飞行器（MAV）提供动力，因此不需要它们到地面充电。此类 WPT 系统需要具有高增益和单向波束的天线阵列，以实现最有效的功率传输。本文提出了一种4×4相控阵天线设计，将其分为四个象限的2×2阵列天线，总尺寸为17×14.3 cm2。该天线采用 1.53 毫米厚的 FR4 基板建模，并使用 0.035 毫米厚的铜 (Cu) 进行贴片和接地。每个天线均单独馈电，其中每个象限中的天线馈送相同的相控信号。通过控制每个象限的输入信号相位，辐射束可以沿 phi (phi) 轴在 -140° 至 +60° 范围内转向。整体波束转向角为200°，波束角为43°。该天线还在 7.6−8.75 GHz 的 UWB 频率范围内运行，使其适用于基于脉冲的 WPT 系统。所提出的相控阵天线实现了 34 dBi 的高增益，比其他最先进的作品高出约 2 倍，同时实现了 1.15 GHz 的带宽。
Microwave beam radiation-based far-field Wireless power transfer (WPT) provides power at a higher distance with a smaller attenuation. This can be used to power unmanned micro aerial vehicles (MAVs) thus not requiring them to come to the ground for recharging. Such WPT systems require antenna arrays with a high gain and a unidirectional beam for the most efficient power transfer. In this paper, a 4×4 phased array antenna design is proposed where it is divided into four quadrants of 2×2 array antennas and the total dimension is 17×14.3 cm2. The antenna is modeled on a 1.53 mm thick FR4 substrate with 0.035 mm thick Copper (Cu) for the patch and ground. Every single antenna is individually fed where the antennas in each quadrant are fed the same phased signal. By controlling the input signal phase of each quadrant, the radiation beam can be steered within −140° to +60° along the phi (ϕ) axis. The overall beam steering angle is 200° with a beam angle of 43°. The antenna also operates within the UWB frequency range of 7.6−8.75 GHz making it suitable for pulsed-based WPT system. The proposed phased array antenna achieves a high gain of 34 dBi, which is ∼2x higher compared to the other state-of-the-art works while achieving a 1.15 GHz of bandwidth.