Wireless power transmission system
First Claim
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1. A wireless power transmitter, comprising:
- a plurality of antenna elements; and
at least one controller; and
the plurality of antenna elements and the at least one controller are configured to receive multipath calibration signals from a plurality of devices to be charged;
the at least one controller is further configured to adaptively adjust phases of a power transmission from the plurality of antenna elements, wherein the phases for the plurality of antenna elements are determined based on the received multipath calibration signals, wherein the determined phases for the plurality of antenna elements do not use location signals indicating locations of the plurality of devices to be charged, wherein the determined phases do not require a line of sight between the antenna elements and the plurality of devices to be charged, whereina frequency of the power transmission is greater than 100 MHz, and wherein the at least one controller prioritizes the plurality of devices for power transmission, wherein a higher priority device is charged faster than a lower priority device, andwherein the phases for the plurality of antenna elements are determined by a complex conjugate of each of the multipath calibration signals received by the respective antenna element.
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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.
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Citations
18 Claims
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1. A wireless power transmitter, comprising:
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a plurality of antenna elements; and at least one controller; and the plurality of antenna elements and the at least one controller are configured to receive multipath calibration signals from a plurality of devices to be charged; the at least one controller is further configured to adaptively adjust phases of a power transmission from the plurality of antenna elements, wherein the phases for the plurality of antenna elements are determined based on the received multipath calibration signals, wherein the determined phases for the plurality of antenna elements do not use location signals indicating locations of the plurality of devices to be charged, wherein the determined phases do not require a line of sight between the antenna elements and the plurality of devices to be charged, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the at least one controller prioritizes the plurality of devices for power transmission, wherein a higher priority device is charged faster than a lower priority device, and wherein the phases for the plurality of antenna elements are determined by a complex conjugate of each of the multipath calibration signals received by the respective antenna element. - View Dependent Claims (2, 3)
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4. A method, comprising:
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receiving, by a plurality of antenna elements, a multipath calibration signal from each of a plurality of devices to be charged; adaptively adjusting phases of the power transmission from the plurality of antenna elements, wherein the phases for the plurality of antenna elements are determined based on the received multipath calibration signal, wherein the determined phases for the plurality of antenna elements do not use a location signal indicating a location of the device to be charged, wherein the determined phases do not require a line of sight between the antenna elements and the devices to be charged, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the plurality of devices are prioritized for power transmission, wherein a higher priority device is charged faster than a lower priority device, and wherein the phases for the plurality of antenna elements are determined by a complex conjugate of the multipath calibration signal received by the respective antenna element. - View Dependent Claims (5, 6)
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7. A wireless power transmitter, comprising:
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a plurality of antenna elements; and at least one controller; and the plurality of antenna elements and the at least one controller are configured to receive a multipath calibration signal from each device of a plurality of devices to be charged by a power transmission; the at least one controller is further configured to adaptively adjust phases of the power transmission from the plurality of antenna elements, wherein the phases for the plurality of antenna elements are determined by a complex conjugate of the received multipath calibration signal by the respective antenna element, wherein the determined phases do not require a line of sight between the antenna elements and the device to be charged, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the at least one controller prioritizes the plurality of devices for power transmission, wherein a higher priority device is charged faster than a lower priority device. - View Dependent Claims (8)
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9. A method, comprising:
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receiving, by a plurality of antenna elements, a multipath calibration signal from each device of a plurality of devices to be charged by a power transmission; and adaptively adjusting phases of the power transmission from the plurality of antenna elements, wherein the phases for the plurality of antenna elements are determined by a complex conjugate of the received multipath calibration signal by the respective antenna element, wherein the determined phases do not require a line of sight between the antenna elements and the device to be charged, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the plurality of devices are prioritized for power transmission, wherein a higher priority device is charged faster than a lower priority device. - View Dependent Claims (10)
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11. A wireless power transmitter, comprising:
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a plurality of antenna elements; and at least one controller; and the plurality of antenna elements and the at least one controller are configured to perform shared charging of a plurality of devices; the at least one controller is further configured to adaptively adjust phases of the power transmission from the plurality of antenna elements to charge the plurality of devices, wherein the plurality of devices share the plurality of antennas by time sharing, frequency sharing, phase sharing or antenna sharing, wherein for time sharing, the plurality of devices receive power from the plurality of antennas at different times, for frequency sharing, the plurality of devices receive power from the plurality of antennas using different frequencies, for phase sharing, the plurality of devices simultaneously receive power from the plurality of antennas using different antenna phases and for antenna sharing, the plurality of devices receive power from different ones of the plurality of antennas, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the at least one controller prioritizes the plurality of devices for power transmission, wherein a higher priority device is charged faster than a lower priority device, and wherein the phases for the plurality of antenna elements are determined by a complex conjugate of the multipath calibration signal received by the respective antenna element. - View Dependent Claims (12, 13, 14)
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15. A method, comprising:
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sharing, using power transmissions by antenna elements, charging of a plurality of devices; and wherein the power transmissions have adaptively adjusted phases from the plurality of antenna elements, wherein the plurality of devices share the plurality of antennas by time sharing, frequency sharing, phase sharing or antenna sharing, wherein for time sharing, the plurality of devices receive power from the plurality of antennas at different times, for frequency sharing, the plurality of devices receive power from the plurality of antennas using different frequencies, for phase sharing, the plurality of devices simultaneously receive power from the plurality of antennas using different antenna phases and for antenna sharing, the plurality of devices receive power from different ones of the plurality of antennas, wherein a frequency of the power transmission is greater than 100 MHz, and wherein the plurality of devices are prioritized for power transmission, wherein a higher priority device is charged faster than a lower priority device, and wherein the phases for the plurality of antenna elements are determined by a complex conjugate of the multipath calibration signal received by the respective antenna element. - View Dependent Claims (16, 17, 18)
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Specification