The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2024
Filed:
May. 19, 2021
Koninklijke Philips N.v., Eindhoven, NL;
Johannes Wilhelmus Draak, Horst, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A power transmitter comprises a transmitter coil () generating an electromagnetic field. A set of balanced detection coils () comprises detection coils in series and compensating each other. A foreign object detector () performs foreign object detection, by potentially detect a foreign object in response to a property of an output signal from the set of balanced detection coils () in response to the electromagnetic test meeting a foreign object detection criterion. A communicator () is coupled to a communication antenna () communicates with a power receiver () via this. The communication antenna () comprises a plurality of communication coils () coupled in parallel. A first segment of a first communication coil () has a first coupling to a first detection coil and a second segment of a second coil () has a second coupling to a second detection coil. The couplings are capacitive and/or inductive couplings and the first coupling and the second coupling compensate each other in the output signal.