Wireless Power Transmission
First Claim
1. A radio-frequency power transmitter comprising:
- an array of patch antennas;
an array of phase modulators, each phase modulator having an input port and associated with one or more of the patch antennas;
a local oscillator that provides an oscillatory signal to the input port of each of the phase modulators;
an array of amplifiers, each amplifier receiving an input from one of the phase modulators;
a microprocessor configured to interface with the array of phase modulators and control a holistic radiative power transmission vector pattern generated by the radio-frequency power transmitter.
3 Assignments
0 Petitions
Accused Products
Abstract
A radio-frequency power transmitter. The radio-frequency power transmitter includes an array of patch antennas, an array of phase modulators, each phase modulator having an input port and associated with one or more of the patch antennas, a local oscillator that provides an oscillatory signal to the input port of each of the phase modulators, an array of amplifiers, each amplifier receiving an input from one of the phase modulators, and a microprocessor configured to interface with the array of phase modulators and control a holistic radiative power transmission vector pattern generated by the radio-frequency power transmitter.
270 Citations
15 Claims
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1. A radio-frequency power transmitter comprising:
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an array of patch antennas; an array of phase modulators, each phase modulator having an input port and associated with one or more of the patch antennas; a local oscillator that provides an oscillatory signal to the input port of each of the phase modulators; an array of amplifiers, each amplifier receiving an input from one of the phase modulators; a microprocessor configured to interface with the array of phase modulators and control a holistic radiative power transmission vector pattern generated by the radio-frequency power transmitter. - View Dependent Claims (2, 3, 4, 5)
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6. A radio-frequency power receiver comprising:
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an array of passively phased, resonant antennas; an array of resonant high frequency rectifiers configured to receive energy from the array of antennas; local and global maximum power point tracking circuitry that is configured to dynamically match a load impedance; a backscattering antenna configured to aid in receiver localization and receiver incident electric field phase measurements; a DC-DC converter configured to deliver a fixed voltage determined by a load device. - View Dependent Claims (7, 8, 9)
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10. A method of wirelessly delivering power via a phased antenna array, the method comprising:
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transmitting with a transmission system, a narrow beam of radio-frequency energy having a solid angle, an elevation angle, and an azimuthal angle; receiving the narrow beam of radio-frequency energy with a power receiver and if the received radio-frequency energy is above a predetermined threshold, backscattering a portion of the received radio-frequency energy back towards the phased antenna array; receiving the backscattered portion and determining a path loss and a phase shift associated therewith; associating the determined path loss and phase shift with the elevation angle and azimuthal angle and storing the association in a hash table; identifying a most efficient transmission path based on the associations stored in the hash table; determining a set of supporting paths that constructively interfere with the most efficient path such that the supporting paths are within 10 degrees of the most efficient path and have less than 4 dB of loss relative to the most efficient path; directing energy along the most efficient transmission path and stochastically transmitting energy along the set of supporting paths and recording the transmission efficiencies thereof; identifying the most efficient set of supporting paths; and phase modulating the phased antenna array to transmit energy along the most efficient transmission path and the most efficient set of supporting paths. - View Dependent Claims (11, 12)
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13. A method for delivering wireless power from a wireless power transmission system to a mobile device, the wireless power transmission system including an antenna array, the method comprising:
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receiving a request for wireless power from the mobile device; verifying that the mobile device is authorized to receive power from the wireless power transmission system; tracking the mobile device to determine one or more paths to the mobile device; selecting at least one antenna from the antenna array, the selection being based on the determined one or more paths to the mobile device; scanning, by varying the spatial position of a low power microwave beam, to determine a configuration of the wireless power transmission system such that wireless power is delivered from the wireless power transmission system to the mobile device with a maximal efficiency, the low power microwave beam being delivered from the at least one antenna and having a first frequency and a first power in the region of the mobile device; configuring the wireless power transmission system to deliver power to the mobile device with maximal efficiency, the configuration being based on the results obtained from scanning with the low power microwave beam; delivering power wirelessly from the wireless power transmission system to the mobile device.
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14. A method for dynamically adjusting the price of wireless power, the method comprising:
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requesting wireless power for a mobile device; receiving of the request by a cloud server associated with a transmitter in geographic proximity to the mobile device; adjusting the price of wireless power based on information received from the mobile device and the number of devices requesting wireless power; transmitting the adjusted price to the mobile device; transmitting wireless power to the mobile device upon confirmation of the adjusted price by a user of the mobile device. - View Dependent Claims (15)
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Specification