US 10,561,049 B2
Interference filter for wireless power transfer systems
Alfredo Saab, Sunnyvale, CA (US); and David Wilson, Soquel, CA (US)
Assigned to Integrated Device Technology, Inc., San Jose, CA (US)
Filed by Integrated Device Technology, Inc., San Jose, CA (US)
Filed on Oct. 25, 2017, as Appl. No. 15/793,797.
Claims priority of provisional application 62/414,575, filed on Oct. 28, 2016.
Prior Publication US 2018/0124959 A1, May 3, 2018
Int. Cl. H05K 9/00 (2006.01); H04B 5/00 (2006.01)
CPC H05K 9/0088 (2013.01) [H04B 5/0037 (2013.01); H04B 5/0075 (2013.01)] 20 Claims
OG exemplary drawing
 
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.