Dilemma of Microwave Wireless Power Transfer and Fully Passive Receiver Finding Utilizing Multi-Antenna Technologies
Dilemma of Microwave Wireless Power Transfer and Fully Passive Receiver Finding Utilizing Multi-Antenna Technologies
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DOI：
10.23919/apmc55665.2022.9999897
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发表时间：
2022-11
期刊：
影响因子：
--
通讯作者：
Kentaro Murata
中科院分区：
文献类型：
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作者：
Kentaro Murata
微波无线功率传输（MWPT）存在一个困境：如果接收器（Rx）电量耗尽或失去通信能力，发射器（Tx）无法找到Rx，导致传输效率极低。为了克服这个问题，本文提出了开放式和封闭空间 MWPT 的完全无源 Rx 寻找方法，利用 i) 整流天线的非线性响应和 ii) 屏蔽腔中寄生天线的独特行为。实验成功地证明了使用所提出的方法和简单的 Rx 配置的高精度 Rx 搜索性能。
There is a dilemma in microwave wireless power transfer (MWPT): if a receiver (Rx) runs out of battery or loses communication capability, a transmitter (Tx) cannot find Rx, resulting in extremely low transfer efficiency. To overcome this problem, this paper presents fully passive Rx-finding methods for open- and enclosed-space MWPT by utilizing i) the nonlinear response of rectennas and ii) the unique behavior of parasitic antennas in a shielded cavity. The experiments successfully demonstrate high-accuracy Rx-finding performance using the proposed methods with a simple Rx configuration.