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US 2018/0124959 A1Published application
Interference filter for wireless power transfer systems
AssigneeIntegrated Device Technology, Inc.
InventorsAlfredo SAAB, David WILSON
Life of this patent
Estimating the term…
Abstract
An EMI shield for a wireless power transmitter is presented. The EMI shield includes a patterned metallic layer that when positioned over a transmitting coil of the wireless power transmitter capacitively couples to the transmitting coil to capture electromagnetic radiation while allowing magnetic power to pass. In some embodiments, the patterned metallic layer may be a comb filter.
Claims19
An EMI shield for a wireless power transmitter, comprising:
- a shield layer that, when positioned over a transmitting coil of the wireless power transmitter, capacitively couples to the transmitting coil to capture electromagnetic radiation while allowing magnetic power to pass.
A method of providing a shield for a wireless power transmitter, comprising:
- covering a wireless power coil with a patterned conductor that capacitively couples to the wireless power coil while passing magnetic power from the wireless power coil;
- and
- grounding the patterned conductor.
Dependencies are inferred from the claim text.