SYSTEMS AND METHODS FOR GENERATING POWER WAVES IN A WIRELESS POWER TRANSMISSION SYSTEM

摘要

Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.

主权项

1. A method of wireless power transmission system, the method comprising:
calculating, by a transmitter, a specific absorption rate (SAR) value at each spatial location within a transmission field of the transmitter with respect to one or more power waves radiated from one or more antennas of the transmitter; determining, by the transmitter, a selected portion within the transmission field where the calculated SAR value fails a pre-defined SAR value threshold; and transmitting, by the transmitter, the one or more power waves to converge destructively at or proximate to the selected portion within the transmission field.