Wireless-Power-Transfer System Using Near-Field Capacitively Coupled Resonators

This brief presents the near-field capacitively coupled wireless charging system consisting of a transmitting dock resonator and a receiving multiband resonator. The transmitting dock resonator comprises a planar strip and a ring-shaped metal plate to deliver power to the multiple folded strips as the receiving 3-D multiband resonator at gigahertz band. The wireless charging system for a mobile handset is established to experimentally validate the application of the compact and high-efficiency capacitively coupled wireless charging system.