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:
May. 27, 2025
Filed:
Dec. 10, 2021
Koninklijke Philips N.v., Eindhoven, NL;
Pascal Leonard Maria Theodoor Lebens, Eindhoven, NL;
Wilhelmus Gerardus Maria Ettes, Leeuwarden, NL;
Klaas Jakob Lulofs, Veldhoven, NL;
Johannes Wilhelmus Draak, Limburg, NL;
]Koninklije Philips N.V., Eindhoven, NL;
Abstract
A power transmitter () comprises a driver () generating a drive signal for a transmitter coil to generate a power transfer signal during a power transfer time interval and an electromagnetic test signal during a measurement time interval. A set of balanced detection coils () comprise two detection coils arranged such that signals induced in the two detection coils by an electromagnetic field generated by the transmitter coil compensate each other. An estimation circuit () determines a position/coupling factor estimate for the power receiver () in response to signals from the plurality of sets of balanced detection coils () during the at least one measurement time interval.