Beamforming for wireless power transfer
First Claim
1. A method comprising:
- determining a position of a second wireless power transfer device relative to a first wireless power transfer device;
determining a phase/amplitude map for a notional field in a plane of an aperture of the second wireless power transfer device;
performing a Fourier transform on the phase/amplitude map for the notional field to generate a spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device;
determining a phase/amplitude map for a second notional field in a plane of an aperture of the first wireless power transfer device based on the spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device and the position of the second wireless power transfer device;
generating control signals for one or more transducer elements of the first wireless power transfer device based on the determined phase/amplitude map for the second notional field in the plane of the aperture of the first wireless power transfer device;
supplying the control signals for the one or more transducer elements to the one or more transducer elements; and
transmitting waveforms from the one or more transducer elements based on the supplied control signals.
1 Assignment
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Accused Products
Abstract
Systems and techniques are provided for beamforming for wireless power transfer. A phase/amplitude map for a notional field in a plane of an aperture of the second wireless power transfer device may be determined. A Fourier transform may be performed on the phase/amplitude map for the notional field to generate a spatial frequency representation of the notional field. A phase/amplitude map for a second notional field in a plane of an aperture of the first wireless power transfer device may be determined based on the spatial frequency representation of the notional field and the position of the second wireless power transfer device. Control signals for transducer elements of the first wireless power transfer device may be generated based on the determined phase/amplitude map for the second notional field. The control signals for the transducer elements may be supplied to the transducer elements.
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Citations
20 Claims
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1. A method comprising:
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determining a position of a second wireless power transfer device relative to a first wireless power transfer device; determining a phase/amplitude map for a notional field in a plane of an aperture of the second wireless power transfer device; performing a Fourier transform on the phase/amplitude map for the notional field to generate a spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device; determining a phase/amplitude map for a second notional field in a plane of an aperture of the first wireless power transfer device based on the spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device and the position of the second wireless power transfer device; generating control signals for one or more transducer elements of the first wireless power transfer device based on the determined phase/amplitude map for the second notional field in the plane of the aperture of the first wireless power transfer device; supplying the control signals for the one or more transducer elements to the one or more transducer elements; and transmitting waveforms from the one or more transducer elements based on the supplied control signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for beamforming for wireless power transfer comprising:
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a plurality of elements adapted and configured to transmit waveforms for a transmitted beam based on supplied control signals; a receiver position detector adapted to determine a position of a receiving wireless power transfer device; and a computing device comprising a transducer signal generator configured to determine a phase/amplitude map for a notional field in a plane of an aperture of the receiving wireless power transfer device, perform a Fourier transform on the phase/amplitude map for the notional field to generate a spatial frequency representation of the notional field in the plane of the aperture of the receiving wireless power transfer device, determine a phase/amplitude map for a second notional field in a plane of an aperture of the a transmitting wireless power transfer device comprising the plurality of elements based on the spatial frequency representation of the notional field in the plane of the aperture of the receiving wireless power transfer device and the position of the receiving wireless power transfer device, generate control signals for one or more of the plurality of elements based on the determined phase/amplitude map for the second notional field in the plane of the aperture of the transmitting wireless power transfer device, and supply the control signals for one or more of the plurality of elements to the one or more of the plurality of elements. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
- one or more computers and one or more storage devices storing instructions which are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising;
determining a position of a second wireless power transfer device relative to a first wireless power transfer device; determining a phase/amplitude map for a notional field in a plane of an aperture of the second wireless power transfer device; performing a Fourier transform on the phase/amplitude map for the notional field to generate a spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device; determining a phase/amplitude map for a second notional field in a plane of an aperture of the first wireless power transfer device based on the spatial frequency representation of the notional field in the plane of the aperture of the second wireless power transfer device and the position of the second wireless power transfer device; generating control signals for one or more transducer elements of the first wireless power transfer device based on the determined phase/amplitude map for the second notional field in the plane of the aperture of the first wireless power transfer device; supplying the control signals for the one or more transducer elements to the one or more transducer elements; and transmitting waveforms from the one or more transducer elements based on the supplied control signals.
- one or more computers and one or more storage devices storing instructions which are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising;
Specification