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US 10,566,846 B2Granted
Wireless power transmission system
AssigneeOssia Inc.
InventorHatem Zeine
Life of this patent
Estimating the term…
Abstract
The wireless power transmission is a system for providing wireless charging and/or primary power to electronic/electrical devices via microwave energy. The microwave energy is focused to a location by a power transmitter having one or more adaptively-phased microwave array emitters. Rectennas within the device to be charged receive and rectify the microwave energy and use it for battery charging and/or for primary power.
Claims20
A wireless power transmitter, comprising:
- a phased array antenna array;
- and
- at least one controller that is communicatively coupled to phased array antenna array;
- wherein the at least one controller is configured to:
- perform a first instance of a phase tuning process to determine phases of power transmission signals based on a first instance of multipath calibration signals received from a device to be charged,
- transmit, using the phased array antenna array, the power transmission signals to the device to be charged based on the phases of power transmission signals determined by the first instance of the phase tuning process,
- perform a second instance of the phase tuning process to determine phases of the power transmission signals based on a second instance of the multipath calibration signals received from the device to be charged, wherein the second instance of the multipath calibration signals are received in response to the device to be charged receiving the power transmission signals,
- transmit, using the phased array antenna array, the power transmission signals to the device to be charged based on the phases of power transmission signals determined by the second instance of the phase tuning process,
- determine a delay until performing a third instance of the phase tuning process, by comparing a power level of the first instance and the second instance of the multipath calibration signals, and
- perform the third instance of the phase tuning process after the delay has elapsed;
- wherein the phase tuning process includes:
- detecting a phase at which each signal of a respective multipath calibration signals are received by the phased array antenna, and
- determining the phases of the power transmission signals based on a complex conjugate of the phase at which each signal of the respective multipath calibration signals are detected.
10 more elements
A method of wirelessly transmitting power, the method comprising:
- performing, by a controller, a first instance of a phase tuning process to determine phases of power transmission signals based on a first instance of multipath calibration signals received from a device to be charged,
- transmitting, by the controller using a phased array antenna array, the power transmission signals to the device to be charged based on the phases of power transmission signals determined by the first instance of the phase tuning process,
- performing, by the controller, a second instance of the phase tuning process to determine phases of the power transmission signals based on a second instance of the multipath calibration signals received from the device to be charged, wherein the second instance of the multipath calibration signals are received in response to the device to be charged receiving the power transmission signals,
- transmitting, by the controller using the phased array antenna array, the power transmission signals to the device to be charged based on the phases of power transmission signals determined by the second instance of the phase tuning process,
- determining, by the controller, a delay until performing a third instance of the phase tuning process, by comparing a power level of the first instance and the second instance of the multipath calibration signals, and
- performing, by the controller, the third instance of the phase tuning process after the delay has elapsed;
- wherein the phase tuning process includes:
- detecting a phase at which each signal of a respective multipath calibration signals are received by the phased array antenna, and
- determining the phases of the power transmission signals based on a complex conjugate of the phase at which each signal of the respective multipath calibration signals are detected.
6 more elements
Dependencies are inferred from the claim text.