Patent ID: 11935692
Assignee: AIRA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for operating a wireless charging device, comprising:
providing a charging current to a resonant circuit when the resonant circuit includes a first transmitting coil of the wireless charging device;
coupling a second transmitting coil of the wireless charging device to the resonant circuit;
determining a change in impedance of the resonant circuit after coupling the second transmitting coil to the resonant circuit;
modifying frequency of the charging current responsive to the change in the impedance of the resonant circuit, wherein the charging current is provided at a first frequency before the second transmitting coil is coupled to the resonant circuit and provided at a second frequency after the second transmitting coil is coupled to the resonant circuit; and
using a lookup table to determine the second frequency.