arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.00252eess.SPcs.ITmath.IT
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利用分布式天线的无线功率传输:系统设计、原型和实验

Wireless Power Transfer with Distributed Antennas: System Design, Prototype, and Experiments

Shanpu Shen, Junghoon Kim, Chaoyun Song, Bruno Clerckx

摘要:

在本文中,我们设计和实验的远场无线功率传输(WPT)架构的基础上分布式天线,所谓的WPT DAS,动态选择发射天线和频率,以增加输出直流功率。独特的是,空间和频率分集联合利用在建议WPT DAS具有低复杂度,低成本和灵活的部署,以对抗无线衰落信道。数值实验的目的是显示的好处,使用天线和频率选择在空间和频率选择性衰落信道的单用户和多用户的情况下。因此,提出了单用户和两个用户的情况下的WPT DAS原型。在发射端,我们采用天线选择来利用空间分集,采用频率选择来利用频率分集。使用IEEE 802.15.4 RF接口的低复杂度空中有限反馈被设计用于天线和频率选择以及从接收器到发射器的报告。建议的WPT DAS原型在一个真实的室内环境中进行了演示。测试结果表明,WPT DAS在单用户情况下可将输出直流功率提高30 dB,在双用户情况下可将输出直流功率之和提高21.8 dB,并以低成本、低复杂度和灵活的方式扩大了服务覆盖范围。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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