Coverage probability of distributed wireless power transfer system

The wireless power transfer via an electro-magnetic (EM) wave enables far-field power transfer. In this paper, we provide an analytic and experimental study on a distributed antenna system for the wireless power transfer as a mean to overcome low end-to-end power transfer efficiency of a conventional collocated antenna system. We study the wireless power transfer system with or without the frequency and phase synchronization between antennas. Based on the experimental results, we show that the distributed antenna system is advantageous in terms of the coverage probability as long as the optimal distributed beamforming is available in the distributed antenna system.