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:
Oct. 13, 2020
Filed:
Aug. 16, 2018
Applicant:
Integrated Device Technology, Inc., San Jose, CA (US);
Inventors:
Assignee:
Integrated Device Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 50/60 (2016.01); H02J 50/12 (2016.01); G01V 3/38 (2006.01); G01R 27/26 (2006.01); H02J 7/02 (2016.01); G01V 3/10 (2006.01);
U.S. Cl.
CPC ...
H02J 50/60 (2016.02); G01R 27/2688 (2013.01); G01V 3/38 (2013.01); H02J 50/12 (2016.02); G01V 3/101 (2013.01); H02J 7/025 (2013.01);
Abstract
A method of measuring a Q-factor in a wireless power transmitter includes charging a capacitor in a LC tank circuit that includes a transmission coil to a voltage; starting a Q-factor determining by coupling the LC tank circuit to ground to form a free-oscillating circuit; monitoring the voltage across the capacitor as a function of time as the LC tank circuit oscillates; and determining the resonant frequency and the Q-factor from monitoring the voltage.