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. 07, 2024
Filed:
Apr. 16, 2021
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
John J. Albers, Chicago, IL (US);
Jorge Grilo, Chicago, IL (US);
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
B81B 7/00 (2006.01); H04R 3/04 (2006.01);
U.S. Cl.
CPC ...
B81B 7/008 (2013.01); H04R 3/04 (2013.01); B81B 2201/0257 (2013.01); H04R 2201/003 (2013.01);
Abstract
A microelectromechanical systems (MEMS) device includes a MEMS die and an electrical circuit electrically connected to the MEMS die. The electrical circuit includes a first capacitor that produces a first output signal based on a signal received from the MEMS die, and a second capacitor that produces a second output signal based on a signal received from the MEMS die. The electrical circuit is configured to determine a nominal capacitance of the MEMS die based on a ratio of the first output signal to the second output signal and a ratio of the capacitances of the first and second capacitors.