论文标题
带有分布式天线的无线电源传输：系统设计，原型和实验
Wireless Power Transfer with Distributed Antennas: System Design, Prototype, and Experiments
论文作者
论文摘要
在本文中，我们根据分布式天线（所谓的WPT DAS）设计和实验远场无线功率传递（WPT）体系结构，该体系结构动态选择了传输天线和频率以增加输出直流功率。独特的是，在拟议的WPT DAS中共同利用空间和频率多样性，其复杂性低，低成本和灵活的部署，以打击无线褪色通道。数值实验旨在使用天线和频率选择在空间和频率选择性褪色通道中显示出益处，用于单用户和多用户案例。因此，针对单用户和两用户案例的拟议的WPT DA是原型的。在发射器上，我们采用天线选择来利用空间多样性，并采用频率选择来利用频率多样性。使用IEEE 802.15.4 RF接口的低复杂性无线有限反馈设计用于天线和频率选择以及从接收器到发射器的报告。所提出的WPT DAS原型在实际室内环境中得到了证明。测量结果表明，WPT DAS可以在单用户案例中提高输出DC功率高达30 dB，并在两用户案例中将输出DC功率的总和提高21.8 dB，并以低成本，低复杂性和灵活的方式扩大服务覆盖面积。
In this paper, we design and experiment a far-field wireless power transfer (WPT) architecture based on distributed antennas, so-called WPT DAS, that dynamically selects transmit antenna and frequency to increase the output dc power. Uniquely, spatial and frequency diversities are jointly exploited in the proposed WPT DAS with low complexity, low cost, and flexible deployment to combat the wireless fading channel. A numerical experiment is designed to show the benefits using antenna and frequency selections in spatially and frequency selective fading channels for single-user and multi-user cases. Accordingly, the proposed WPT DAS for single-user and two-user cases is prototyped. At the transmitter, we adopt antenna selection to exploit spatial diversity and adopt frequency selection to exploit frequency diversity. A low-complexity over-the-air limited feedback using an IEEE 802.15.4 RF interface is designed for antenna and frequency selections and reporting from the receiver to the transmitter. The proposed WPT DAS prototype is demonstrated in a real indoor environment. The measurements show that WPT DAS can boost the output dc power by up to 30 dB in single-user case and boost the sum of output dc power by up to 21.8 dB in two-user case and broaden the service coverage area in a low cost, low complexity, and flexible manner.
