Patent ID: 11863001
Assignee: ENERGOUS CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. A method of wirelessly charging a receiver device, the method comprising:
providing a near-field antenna that comprises:
a first dipole antenna;
a second dipole antenna;

providing a near-field wireless-power-transmission system that includes the near-field antenna and:
switch circuitry coupled to at least the first dipole antenna and the second dipole antenna;
a power amplifier coupled to the switch circuitry; and
an impedance-adjusting component coupled to the switch circuitry;

instructing the switch circuitry to couple: (i) the first dipole antenna to the power amplifier, and (ii) the second dipole antenna to the impedance-adjusting component;
instructing the power amplifier to feed electromagnetic signals to the first dipole antenna via the switch circuitry, wherein:
the electromagnetic signals, when fed to the first dipole antenna, cause the first dipole antenna to radiate electromagnetic signals to be received by a wireless-power-receiving device located within a threshold distance from the near-field antenna, and
an impedance of the second dipole antenna is adjusted by the impedance-adjusting component so that the impedance of the second dipole antenna differs from an impedance of the first dipole antenna;

instructing the switch circuitry to, in response to a request from a wireless-power receiving device for a particular amount of power, increment or decrement a power level of electromagnetic waves output by the near-field wireless-power-transmission system based on a power threshold, wherein incrementing or decrementing the power level includes adjusting one or more settings of the power amplifier, the impedance-adjusting component, or both.