ADAPTIVE MATCHING AND TUNING OF HF WIRELESS POWER TRANSMIT ANTENNA
First Claim
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1. A transmitter system for wireless power, comprising:
- an antenna, comprising of an inductive element and a capacitor that are collectively magnetically resonant at a first frequency; and
a coupling loop assembly, comprising of a first coupling loop part of a first smaller size and a first switch to activate said first coupling loop, and a second coupling loop part of a second larger size with a second switch to activate said second coupling loop.
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Abstract
Exemplary embodiments of the invention s are directed to a wireless power system with different coupling loops, such as two loops. The coupling loops are switched. One can be used for vicinity coupling, e.g., greater than a distance away, the other for proximity coupling, e.g., less than a distance away.
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Citations
36 Claims
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1. A transmitter system for wireless power, comprising:
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an antenna, comprising of an inductive element and a capacitor that are collectively magnetically resonant at a first frequency; and a coupling loop assembly, comprising of a first coupling loop part of a first smaller size and a first switch to activate said first coupling loop, and a second coupling loop part of a second larger size with a second switch to activate said second coupling loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 29)
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11. A receiver system for wireless power, comprising:
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a circuit that receives a signal at a first frequency and produces an electrical output based on said first frequency; a antenna, comprising of an inductive element and a capacitor that are collectively magnetically resonant at said first frequency; and a coupling loop assembly, comprising of a first coupling loop part of a first smaller size and a first switch to activate said first coupling loop, and a second coupling loop part of a second larger size with a second switch to activate said second coupling loop. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An antenna, comprising:
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multiple loops forming an inductive part; a capacitor, in series with said multiple loops; and a mover, that moves said multiple loops relative to one another, to move the loops closer to one another to raise a resonance frequency of said antenna, and to move the loops further from one another to lower the resonance frequency of said antenna. - View Dependent Claims (22, 23, 24)
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25. A method of coupling electric power, comprising:
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detecting wireless power transfer with a proximity that is less than a first distance away, and switching to a smaller coupling loop to transfer power with the proximity; and detecting wireless power transfer with a vicinity that is greater than the first distance away, and switching to a larger coupling loop to transfer power with the vicinity. - View Dependent Claims (26, 28)
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27. A method of coupling electric power, comprising:
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configuring a circuit into a first configuration to transfer power wirelessly with a vicinity that is greater than a first distance away; and configuring the circuit into a second configuration to transfer power with a proximity that is less than the first distance away.
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30. A system for wireless power, comprising:
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means for transmitting or receiving wireless power, said means, comprising of an inductive element and a capacitor that are collectively magnetically resonant at a first frequency; and means for coupling wireless power to and from said means for transmitting or receiving, said coupling means including a means that first couples wireless power to said means, said first means of a first smaller size and a means for activating said first coupling loop means, and a means for second coupling wireless power to said means for transmitting or receiving wireless power, said second means being of a second larger size than said first size, and means for activating said second means. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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Specification