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:
Mar. 07, 2023
Filed:
Dec. 27, 2019
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
Tore Sejr Jørgensen, Taastrup, DK;
Allan Nielsen, Roskilde, DK;
Assignee:
KNOWLES ELECTRONICS, LLC., Itasca, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/52 (2020.01); G01R 31/56 (2020.01); H03F 3/181 (2006.01); H03M 1/12 (2006.01); H04R 1/04 (2006.01); H04R 3/04 (2006.01); H04R 19/04 (2006.01);
U.S. Cl.
CPC ...
G01R 31/52 (2020.01); G01R 31/56 (2020.01); H03F 3/181 (2013.01); H03M 1/12 (2013.01); H04R 1/04 (2013.01); H04R 3/04 (2013.01); H04R 19/04 (2013.01); H03F 2200/03 (2013.01); H04R 2201/003 (2013.01);
Abstract
The present disclosure relates in a first aspect to a method of detecting leakage current from a DC bias voltage circuit of an integrated circuit for a capacitive microelectro mechanical systems (MEMS) transducer. A test signal with a predetermined frequency and level is superimposed on a first DC bias voltage generated by the DC bias voltage circuit.