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:
Jan. 14, 2020
Filed:
Nov. 01, 2016
Koninklijke Philips N.v., Eindhoven, NL;
Neil Francis Joye, Waalre, NL;
Klaas Jacob Lulofs, Eindhoven, NL;
Eddy Gerrit Veltman, Steenbergen, NL;
Andries Van Wageningen, Wijlre, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A wireless power transmitter ()) comprises a resonance circuit () comprises a transmitter inductor () for generating a power transfer signal for wirelessly transferring power to the power receiver (). A driver () generates a drive signal for the resonance circuit () and a resonance modification circuit () aligns the resonance frequency of the resonance circuit () with the drive frequency of the drive signal by slowing a state change for resonance circuit () for a fractional time interval of cycles of the drive signal. A load estimator () generates a load estimate reflecting an equivalent load resistor for the transmitter inductor () reflecting the loading of the power transfer signal. A drive frequency adapter () then adapts the drive frequency in response to the load estimate. The invention may in particular improve load modulation communication quality.