APPARATUS FOR WIRELESS DEVICE CHARGING USING RADIO FREQUENCY (RF) ENERGY AND DEVICE TO BE WIRELESSLY CHARGED
First Claim
1. An apparatus for wireless charging using radio frequency (RF) energy, comprising:
- a first charger portion having first and second charging areas, the first and second charging areas located in a common plane, the first and second charging areas each having at least one coil for wirelessly charging a charge-receiving device placed in proximity to any of the first and second charging areas, the at least one coil in each of the first and second charging areas comprising a respective winding, the winding of the coil in the first charging area being wound in a direction opposite that of the winding of the coil in the second charging area, each coil being connected in series, each coil configured to charge at least one charge-receiving device; and
a second charger portion having a third charging area, the third charging area having at least one coil comprising a winding for wirelessly charging a charge-receiving device placed in proximity to the third charging area, the coil in the third charging area being connected in series with the coils in the first and second charging areas, the third charging area located in a plane that is orthogonal to the plane of the first and second charging areas.
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Abstract
An apparatus for wireless charging using radio frequency (RF) energy includes a first charger portion having first and second charging areas. The first and second charging areas are located in a common plane, each having at least one coil for wirelessly charging a charge-receiving device placed in proximity thereto. The coils include respective windings, which are wound in opposing directions, each coil being connected in series, each coil configured to charge at least one charge-receiving device. A second charger portion has a third charging area having at least one coil including a winding for wirelessly charging a charge-receiving device placed in proximity to the third charging area, the coil in the third charging area being connected in series with the coils in the first and second charging areas, the third charging area located in a plane that is orthogonal to the plane of the first and second charging areas.
289 Citations
35 Claims
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1. An apparatus for wireless charging using radio frequency (RF) energy, comprising:
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a first charger portion having first and second charging areas, the first and second charging areas located in a common plane, the first and second charging areas each having at least one coil for wirelessly charging a charge-receiving device placed in proximity to any of the first and second charging areas, the at least one coil in each of the first and second charging areas comprising a respective winding, the winding of the coil in the first charging area being wound in a direction opposite that of the winding of the coil in the second charging area, each coil being connected in series, each coil configured to charge at least one charge-receiving device; and a second charger portion having a third charging area, the third charging area having at least one coil comprising a winding for wirelessly charging a charge-receiving device placed in proximity to the third charging area, the coil in the third charging area being connected in series with the coils in the first and second charging areas, the third charging area located in a plane that is orthogonal to the plane of the first and second charging areas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wrist-worn charge-receiving device, comprising:
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an antenna coil adapted to receive radio frequency (RF) charging energy; and a rechargeable power source coupled to the antenna coil, the antenna coil adapted to provide the RF charging energy to the rechargeable power source. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An ear-worn charge-receiving device, comprising:
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an antenna coil adapted to receive radio frequency (RF) charging energy; and a rechargeable power source coupled to the antenna coil, the antenna coil adapted to provide the RF charging energy to the rechargeable power source. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A charge-receiving device, comprising:
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an antenna coil adapted to receive radio frequency (RF) charging energy; a rechargeable power source coupled to the antenna coil, the antenna coil adapted to provide the RF charging energy to the rechargeable power source; and a ferrite magnetic material separating the antenna coil from a metal-containing assembly associated with the charge-receiving device. - View Dependent Claims (31, 32, 33, 34, 35)
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Specification