Novel Energy Harvesting and SWIPT System at 28 GHz with a Simple Phased Array

The realization of future radiative wireless power transfer products necessitates a simple and low-cost phased array with higher frequency to increase the beam efficiency. Further, simultaneous wireless power and information transfer (SWIPT) are also expected. This study developed a simple phased array at 28 GHz while considering energy harvesting from 5G radio waves. The number of antenna elements in the phased array with parasitic elements were reduced and novel, simple, and low-cost phase shifters were employed. Consequently, beam steering and SWIPT experiments were conducted using the developed phased array. This study expanded upon the developed phased array and the experimental results in Japan.