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US 10,651,687 B2Granted
Detuning for a resonant wireless power transfer system including cryptography
AssigneeMassachusetts Institute of Technology
InventorsAnantha P. Chandrakasan, Nachiket V. Desai, Chiraag Juvekar, Shubham Chandak
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Abstract
A method and apparatus for achieving detuning for a resonant wireless power transfer system including cryptography is described. Detuning for a resonant wireless power transfer system including cryptography allows for detuning a wireless receiver based upon authentication between the wireless receiver and a wireless charger.
Claims28
A method for wireless power authentication comprising:
- emitting an authentication challenge from a main inductive element of a wireless receiver to a wireless charger proximate to the wireless receiver;
- validating a response from the wireless charger;
- and
- adjusting a resonant frequency of the main inductive element according to the validated response.
1 more element
A wireless power receiver for use within a wireless resonant inductive power transfer system, the wireless power receiver comprising:
- a first inductive coil coupled to a digital authentication engine;
- and
- a second inductive coil coupled to an auxiliary rectifier, wherein an impedance of the auxiliary rectifier is adjusted according to the digital authentication engine.
Dependencies are inferred from the claim text.