Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna

In this paper, a dual-band RF wireless power transfer (WPT) system with shared-aperture Tx array antenna for 2.4 and 5.8 GHz is proposed. The final configuration of the array, which made up right-handed circular polarization (RHCP) patches RHCP patches, derived from optimization thinned arrays, ultimately to achieve high transmission efficiency various WPT scenarios. including module implemented, Rx antennas patch, (2.4 GHz) patch are developed. To validate proposed system, experiments using single band dual bands were conducted. When transmitting on frequency (either 2.482 or 5.73 GHz), received according distance between position was measured. varied 1 m 3.9 transmitted 40 dBm, value at measured found be 24.75–13.5 dBm (WPT = 2.985–0.224%) 19.25–6.8 0.841–0.050%), respectively. results in good agreement calculated results, it revealed that when via beam-focusing increases more than conventional beam-forming. Furthermore, experiment proves beam beams can formed individually their two different Rx.