US Patent No. 10,561,049

INTERFERENCE FILTER FOR WIRELESS POWER TRANSFER SYSTEMS


Patent No. 10,561,049
Issue Date February 11, 2020
Title Interference Filter For Wireless Power Transfer Systems
Inventorship Alfredo Saab, Sunnyvale, CA (US)
David Wilson, Soquel, CA (US)
Assignee Integrated Device Technology, Inc., San Jose, CA (US)

Claim of US Patent No. 10,561,049

1. 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,
wherein the shield layer is a patterned metallic layer formed on a substrate, the patterned metallic layer having a plurality of holes formed in a metallic layer, the metallic layer being coupled to ground.