Frequency division multiplexing for wireless power providers
First Claim
Patent Images
1. An apparatus, comprising:
- a guided surface wave receive structure configured to obtain electrical energy from a guided surface wave traveling along a terrestrial medium;
an electrical load coupled to the guided surface wave receive structure, the electrical load being experienced as a load at an excitation source coupled to a guided surface waveguide probe generating the guided surface wave, wherein the guided surface waveguide probe comprises a feed network electrically coupled to a charge terminal of the guided surface waveguide probe, the feed network providing a phase delay (ϕ
) that matches a wave tilt angle (ψ
) associated with a complex Brewster angle of incidence (θ
i,B) associated with a lossy conducting medium in the vicinity of the guided surface waveguide probe; and
control circuitry configured to at least;
determine a frequency upon which the electrical energy is being transmitted; and
tune the electrical load to receive the electrical energy on the frequency.
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Abstract
Disclosed are various embodiments for frequency-division multiplexing for wireless power providers using guided surface waveguide probes to transmit power. Guided surface waveguide probes may transmit power on multiple frequencies with potentially overlapping service areas. Frequency-agile wireless power receivers may tune to one or more frequencies. Cost, availability, and/or other information may be provided to the wireless power receivers. Power usage may be reported by the wireless power receivers to power providers.
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Citations
20 Claims
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1. An apparatus, comprising:
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a guided surface wave receive structure configured to obtain electrical energy from a guided surface wave traveling along a terrestrial medium; an electrical load coupled to the guided surface wave receive structure, the electrical load being experienced as a load at an excitation source coupled to a guided surface waveguide probe generating the guided surface wave, wherein the guided surface waveguide probe comprises a feed network electrically coupled to a charge terminal of the guided surface waveguide probe, the feed network providing a phase delay (ϕ
) that matches a wave tilt angle (ψ
) associated with a complex Brewster angle of incidence (θ
i,B) associated with a lossy conducting medium in the vicinity of the guided surface waveguide probe; andcontrol circuitry configured to at least; determine a frequency upon which the electrical energy is being transmitted; and tune the electrical load to receive the electrical energy on the frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a guided surface wave receive structure configured to obtain electrical energy from a guided surface wave traveling along a terrestrial medium; an electrical load coupled to the guided surface wave receive structure, the electrical load being experienced as a load at an excitation source coupled to a guided surface waveguide probe generating the guided surface wave; and control circuitry configured to at least; determine a frequency upon which the electrical energy is being transmitted; tune the electrical load to receive the electrical energy on the frequency; receive cost data indicating a cost associated with power consumption via the frequency; receive availability data indicating an availability of the electrical energy via the frequency; and the frequency is determined based at least in part on the cost data and the availability data.
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13. An apparatus, comprising:
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a first guided surface waveguide probe configured to transmit electrical energy on a first frequency, the first guided surface waveguide probe having a first service area; a second guided surface waveguide probe configured to transmit electrical energy on a second frequency, the first guided surface waveguide probe having a second service area, wherein the first service area overlaps the second service area at an overlapping service area; and a respective feed network electrically coupled to a respective charge terminal of the first guided surface waveguide probe or the second guided surface waveguide probe, the respective feed network providing a phase delay (ϕ
) that matches a wave tilt angle (ψ
) associated with a complex Brewster angle of incidence (θ
i,B) associated with a lossy conducting medium in the vicinity of a corresponding one of the first guided surface waveguide probe or the second guided surface waveguide probe. - View Dependent Claims (14, 15, 16, 17)
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18. A method, comprising:
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receiving, via a computing device comprising a processor and a memory, a request from a wireless power receiver to consume electrical energy; determining, via the computing device, that a particular power provider of a plurality of power providers has available capacity to service the request; and directing, via the computing device, the wireless power receiver to tune to a corresponding power transmission frequency upon which the particular power provider transmits electrical energy via a guided surface waveguide probe, wherein a feed network is electrically coupled to a charge terminal of the guided surface waveguide probe, the feed network providing a phase delay (ϕ
) that matches a wave tilt angle (ψ
) associated with a complex Brewster angle of incidence (θ
i,B) associated with a lossy conducting medium in the vicinity of the guided surface waveguide probe. - View Dependent Claims (19)
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20. A method, comprising:
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receiving, via a computing device comprising a processor and a memory, a request from a wireless power receiver to consume electrical energy; determining, via the computing device, that a particular power provider of a plurality of power providers has available capacity to service the request; directing, via the computing device, the wireless power receiver to tune to a corresponding power transmission frequency upon which the particular power provider transmits electrical energy via a guided surface waveguide probe; and sending, via the computing device, power cost information associated with the particular power provider to the wireless power receiver.
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Specification