Patent ID: 11962165
Assignee: NUCURRENT, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power transmitter for wireless power transfer at an operating frequency, the power transmitter comprising:
a coil defining a top face and a bottom face, the coil configured to transmit a power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer; and
a shielding comprising a magnetic backing and a magnetic wall, the magnetic wall and the magnetic backing defining a cavity that extends at least from the magnetic backing to the bottom face of the coil, the magnetic wall including a top surface, wherein the bottom face of the coil is positioned above the top surface of the magnetic wall, such that the shielding is configured to concentrate magnetic fields created by the coil.