Circular and square SRR exploitation as a means for wireless power transfer

As wireless power transfer (WPT) systems emerge, the efficiency and achievable transmitting distance are two constraining factors for their prevalence over wired ones. In this paper, two split ring resonator (SRR)-based WPT configurations, with circular and square SRRs, as their transmitting and receiving elements, are investigated for various frequencies and distances. The efficiency is found to be very satisfactory in both cases, exceeding 98% for certain sets of parameters. Thus, the general response of both arrangements seems to be promising for effective power transfer over distances of a few centimeters.