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. 04, 2017
Filed:
Aug. 06, 2012
Eberhard Waffenschmidt, Aachen, DE;
Adrianus Sempel, Waalre, NL;
Dave Willem Van Goor, Nederweert eind, NL;
Henricus Theodorus Van Der Zanden, Sint-Oedenrode, NL;
Eberhard Waffenschmidt, Aachen, DE;
Adrianus Sempel, Waalre, NL;
Dave Willem Van Goor, Nederweert eind, NL;
Henricus Theodorus Van Der Zanden, Sint-Oedenrode, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A resonant matching circuit () for matching a resonant frequency of a wireless power transfer system to a frequency of a power signal comprises a switch () connected in parallel with a resonant element () of the wireless power transfer system; and a controller () connected to the switch () and configured to detect a zero-voltage level crossing of a signal flowing through the resonant element () and to close the switch () for a predefined amount of time upon detection of the zero-voltage level crossing, wherein closing the switch () for the predefined amount of time adds any one of an inductive value and a capacitive value to the resonant frequency of a wireless power transfer system.