WIRELESS POWER TRANSMISSION SYSTEM
First Claim
Patent Images
1. 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 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 detect a phase at which each of the multipath calibration signals is received by the transceiver;
a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter; and
,wherein the circuitry configured to receive power transmission signals is further configured to receive a power transmission signal having a determined phase, the determined phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of a detected phase of the calibration signal; and
wherein the microwave power transmitter and rechargeable battery are not required to be in line of sight of each other.
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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.
270 Citations
12 Claims
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1. A rechargeable battery, comprising:
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circuitry configured to receive power transmission signals from a wireless microwave power transmitter to charge the rechargeable battery; 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 detect a phase at which each of the multipath calibration signals is received by the transceiver; a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter; and
,wherein the circuitry configured to receive power transmission signals is further configured to receive a power transmission signal having a determined phase, the determined phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of a detected phase of the calibration signal; and wherein the microwave power transmitter and rechargeable battery are not required to be in line of sight of each other. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A rechargeable battery apparatus, comprising:
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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 detect a phase at which each of the multipath calibration signals is received by the transceiver; a transmitter configured to transmit said multipath calibration signals to said microwave power transmitter; and
,wherein the circuitry configured to receive power transmission signals is further configured to receive a power transmission signal having a determined phase, the determined phase of the power transmission signal generated under the control of the controller at the microwave power transmitter being substantially a complex conjugate of a detected phase of the calibration signal; and wherein the microwave power transmitter and rechargeable battery are not required to be in line of sight of each other; and one or more null batteries. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification