WIRELESS POWER TRANSFER
First Claim
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1. A wireless power transmitter comprising:
- a transmitting coil configured to wirelessly transmit power to a receiving coil; and
a shield residing on a given side of a substrate spaced apart from the transmitting coil, the shield being configured to filter an electric field induced by the transmitting coil, wherein the shield includes a trace forming a planar pattern of a conductive material that extends across a perimeter of a footprint of the transmitting coil, wherein the trace has a first end coupled to a base region of the shield and extends from the base region to terminate in a second end that is distal from the base region of the shield.
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Abstract
A wireless power transmitter can include a transmitting coil configured to wirelessly transmit power to a receiving coil. The wireless power transmitter can include a shield residing on a given side of a substrate spaced apart from the transmitting coil. The shield can be configured to filter an electric field induced by the transmitting coil.
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Citations
20 Claims
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1. A wireless power transmitter comprising:
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a transmitting coil configured to wirelessly transmit power to a receiving coil; and a shield residing on a given side of a substrate spaced apart from the transmitting coil, the shield being configured to filter an electric field induced by the transmitting coil, wherein the shield includes a trace forming a planar pattern of a conductive material that extends across a perimeter of a footprint of the transmitting coil, wherein the trace has a first end coupled to a base region of the shield and extends from the base region to terminate in a second end that is distal from the base region of the shield. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless power transfer system comprising:
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a transmitter comprising; a source comprising circuitry mounted on a printed circuit board; a transmitting coil configured to wirelessly transfer electrical power from the transmitting coil to a receiving coil, wherein the transmitting coil and the receiving coil are spaced apart; and a shield spaced apart from and positioned between the transmitting coil and the receiving coil, the shield configured to filter an electric field induced by the transmitting coil, wherein the shield has a trace of conductive material forming a planar pattern, wherein the trace has a first end that is coupled to a base region of the shield and that extends from the base region to terminate in a second end that is distal from the base region of the shield. - View Dependent Claims (15, 16, 17, 18)
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19. A wireless power transfer system comprising:
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a transmitting coil coupled to circuitry; a receiving coil spaced apart from the transmitting coil, wherein the transmitting coil is configured to wirelessly induce a current on the receiving coil; and a substrate formed of an insulating material, the substrate being spaced apart from and positioned between the transmitting coil and the receiving coil, the substrate comprising; a first shield residing on a given side of the substrate; and a second shield residing on another side of the substrate, wherein the another side of the substrate opposes the given side of the substrate; wherein the first shield and the second shield each have a trace of conductive material that has a first end that is coupled to a respective base region and that extends from the respective base region to terminate in a second end that is distal from the respective base region, wherein the trace of the first shield and the second shield forms an interleaving pattern, wherein a projection of the interleaving pattern substantially covers a footprint of the transmitting coil. - View Dependent Claims (20)
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Specification