Wireless power transfer for low power devices
First Claim
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1. A wireless power receiver, comprising:
- a receiver circuit selectively coupled to a chargeable element and configured to receive wireless power from a transmit antenna of a wireless power transmitter at a level sufficient to charge the chargeable element; and
a switching device operably coupled between the receiver circuit and the chargeable element and configured to disconnect the receiver circuit from the chargeable element.
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Abstract
Exemplary embodiments are directed to wireless power transfer. A method of operating a wireless receiver may comprise receiving wireless power with a receive antenna and conveying power from the receive antenna to a chargeable element. The method may further include electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully-charged.
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Citations
21 Claims
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1. A wireless power receiver, comprising:
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a receiver circuit selectively coupled to a chargeable element and configured to receive wireless power from a transmit antenna of a wireless power transmitter at a level sufficient to charge the chargeable element; and a switching device operably coupled between the receiver circuit and the chargeable element and configured to disconnect the receiver circuit from the chargeable element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for receiving wireless power, comprising:
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receiving wireless power with a receiver circuit at a level sufficient to charge a chargeable element; conveying power from the receive antenna to the chargeable element; and disconnecting the receiver circuit from the chargeable element upon detecting that the chargeable element is in a substantially fully-charged state. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A wireless power device, the device comprising:
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means for receiving wireless power at a level sufficient to charge a chargeable element; means for conveying power to the chargeable element; and means for disconnecting the receiving means from the chargeable element upon detecting that the chargeable element is in a substantially fully-charged state. - View Dependent Claims (20, 21)
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Specification