Planar resonator for wireless power transfer
First Claim
1. A planar resonator comprising:
- a first coiled conductor arranged on a substrate; and
a second coiled conductor having a vertical axis aligned with said first coiled conductor, and electrically insulated from the first coiled conductor;
the first and second coiled conductors being wound in a common direction, without any other conductors between the first and second conductors and having a predetermined self-resonant frequency, wherein;
a capacitance between the first and second conductors permits energy transfer between the first and second coiled conductors, and the arrangement of the coiled conductors comprises a series resonant configuration.
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Accused Products
Abstract
A planar resonator and method of manufacture provides contactless power transfer using at least two electrically isolated axis aligned conductive across the transfer interface in a coupled inductor or transformer configuration. Signal or power transfer is then accomplished by coupling of magnetic flux. The coupling of electric flux is also accomplished across a same interface and driven with the same conductive spiral-wound conductors. An interface of energy transfer(IOET) has a first spiral-shaped conductor arranged on the top surface of said IOET; a second spiral-shaped conductor arranged on the bottom surface of said IOET, has a vertical axis aligned with the first spiral-shaped conductor. The IOET and the first and second spiral-shaped conductors have a predetermined self-resonant frequency. The planar power resonator stores electric energy in the IOET, and at predetermined frequencies, the arrangement of the first and second spiral-shaped conductors and the IOET permits transfers of magnetic flux and electrical energy between the first and second spirals across the IOET. The resonator facilitates contactless battery charging in devices such as cellphones and wearable electronics where the resonator can be woven into fabric or attached to a person'"'"'s clothes.
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Citations
25 Claims
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1. A planar resonator comprising:
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a first coiled conductor arranged on a substrate; and
a second coiled conductor having a vertical axis aligned with said first coiled conductor, and electrically insulated from the first coiled conductor;
the first and second coiled conductors being wound in a common direction, without any other conductors between the first and second conductors and having a predetermined self-resonant frequency, wherein;
a capacitance between the first and second conductors permits energy transfer between the first and second coiled conductors, and the arrangement of the coiled conductors comprises a series resonant configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A planar power resonator comprising
a pair of flat coiled conductors having an air gap in between, a first coiled conductor of the pair of coiled conductors being in contact with dielectric, said first coiled conductor including means for coupling to a electric source; - and
a second coiled conductor of the pair of coiled conductors being vertically aligned with the first coiled conductor, and electrically insulated from the first coiled conductor, the first and second conductors being wound in a common direction, said second coiled conductor including means for coupling with a load, wherein a capacitance between the pair of coiled conductors permits energy transfer from the first coiled conductor to the second coiled conductor to form a series resonant circuit. - View Dependent Claims (19)
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20. A planar resonator comprising:
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an interface of energy transfer (IOET), said IOET having a top surface and bottom surface;
a first spiral-shaped conductor arranged on the top surface of said IOET;
a second spiral-shaped conductor arranged on the bottom surface of said IOET, said second spiral-shaped conductor having a vertical axis aligned with said first spiral-shaped conductor;
a first substrate material arranged on the top surface of the IOET; and
a second substrate material arranged on the bottom surface of the IOET, wherein the second spiral-shaped conductor is electrically insulated from the first spiral-shaped conductor and wound in a common direction as the first spiral-shaped conductor, and the IOET and the first and second spiral-shaped conductors have a predetermined self-resonant frequency. - View Dependent Claims (21)
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22. A method for providing a planar power resonator for contactless power transfer comprising:
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(a) providing an interface of energy transfer (IOET), said IOET having a top surface and bottom surface;
(b) arranging a first spiral-shaped conductor on the top surface of said IOET; and
(c) arranging a second spiral-shaped conductor on the bottom surface of said IOET so that said second spiral-shaped conductor has a vertical axis in alignment with said first spiral-shaped conductor, and having a winding direction common with the first spiral-shaped conductor, wherein;
the IOET and the first and second spiral-shaped conductors are selected to have a predetermined self-resonant frequency; and
the first and second spirals are electrically insulated from each other and arranged in a series resonator arrangement. - View Dependent Claims (23, 24, 25)
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Specification