Back to results
US 8,854,176 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.
Claims12
A rechargeable battery, comprising:
- circuitry configured to receive power transmission signals from a wireless microwave power transmitter to charge the rechargeable battery;
- wherein the wireless microwave power transmitter comprises:
- a controller and a phased array antenna having a plurality of microwave array transceivers for transmitting the microwave power transmission signals, the transceiver being adaptively-phased by the controller to transmit the power transmission signals at a respective selected phase;
- each transceiver further operable to receive multipath calibration signals from the microwave power receiver and each said transceiver operable to detect a phase at which each of the multipath calibration signals is received by the respective transceiver;
- a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter;
- and,
- wherein the circuitry is further configured to receive the power transmission signal having a detected phase, the detected phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of the detected phase of the multipath calibration signal;
- and
- wherein the microwave power transmitter and rechargeable battery are not required to be in line of sight of each other.
6 more elements
A rechargeable battery apparatus, comprising:
- a receiver battery, the receiver battery comprising:
- circuitry configured to receive power transmission signals from a wireless microwave power transmitter to charge the rechargeable battery;
- a power capacitor configured to output power;
- control circuitry configured to control a power level of the output power based upon a number of null batteries present;
- and a voltage control oscillator configured to control an oscillation frequency for power output by the power capacitor;
- wherein the wireless microwave power transmitter comprising:
- a controller and a phased array antenna having a plurality of microwave array transceivers for transmitting the microwave power transmission signals, the transceiver being adaptively-phased by the controller to transmit the power transmission signals at a respective selected phase;
- each transceiver further operable to receive multipath calibration signals from the microwave power receiver and each said transceiver operable to detect a phase at which each of the multipath calibration signals is received by the respective transceiver;
- a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter;
- and,
- wherein the circuitry is further configured to receive the power transmission signal having a detected phase, the detected phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of the detected phase of the multipath calibration signal;
- and
- wherein the microwave power transmitter and rechargeable battery are not required to be in line of sight of each other.
10 more elements
Dependencies are inferred from the claim text.