A 5.8-GHz 64-Channel Phased Array Microwave Power Transmission System Based on Space-Time Beamforming Algorithm for Multiple IoT Sensors
A 5.8-GHz 64-Channel Phased Array Microwave Power Transmission System Based on Space-Time Beamforming Algorithm for Multiple IoT Sensors
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基于时空波束形成算法的多物联网传感器 5.8GHz 64 通道相控阵微波电力传输系统
DOI：
10.23919/eumc.2018.8541747
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Kohei Onizuka
中科院分区：
文献类型：
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作者：
Kentaro Murata;T. Mitomo;M. Higaki;Kohei Onizuka
报道了一种基于空时波束形成算法的通道相控阵微波功率传输系统，该系统可为多个设备充电。该算法根据直流接收功率信息在最佳时间间隔内切换多个反向波束，从而在最短的时间内满足所有器件所需的能量。测试结果表明，在实际硬件约束下，该方法的优点是：(I)满足要求的时间比max-min方法快40倍；(Ii)总接收功率可与具有2.2db裕度的max-sum方法相媲美。
This paper reports a microwave power transmission system for charging multiple devices using a 64-channel phased array based on the space-time beamforming algorithm. The proposed algorithm switches multiple retrodirective beams in optimal time intervals based on DC receiving power information so that the required energies of all devices are satisfied in a minimum time. Measured results exhibit the advantages of the proposed method under practical hardware constraints: (i) 40-fold faster time than a max-min method to satisfy the requirements, and (ii) high total receiving power comparable with a max-sum method with 2.2 dB margin.