Distributed Microwave Wireless Power Transfer with Backscatter Feedback

In recent, microwave power transfer (MPT) for IoT devices has been studied. The distributed MPT can supply power efficiently by cooperate multiple transmit antenna arranged distributed in a relatively wide area. In this paper, we propose a method for distributed beam control by closed-loop with a backscatter signal from the receiver. The effectiveness of the proposed method will be demonstrated by lay-trace simulation and experiment.