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US 9,425,642 B2Granted
Wireless power transfer for low power devices
AssigneeQUALCOMM Incorporated
InventorsStanley Slavko Toncich, Ernest T. Ozaki
Life of this patent
Estimating the term…
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.
Claims21
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.
The wireless power receiver of claim:
- 1, wherein the switching device comprises a field effect transistor.
A method for receiving wireless power, comprising:
- 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.
1 more element
A wireless power device, the device comprising:
- 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.
1 more element
Dependencies are inferred from the claim text.