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:
Jun. 12, 2018
Filed:
Feb. 24, 2015
Applicant:
Robert Bosch Gmbh, Stuttgart, DE;
Inventor:
John Matthew Muza, Venetia, PA (US);
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 29/00 (2006.01); H04R 3/06 (2006.01); H04R 19/00 (2006.01);
U.S. Cl.
CPC ...
H04R 29/004 (2013.01); H04R 3/06 (2013.01); H04R 29/005 (2013.01); H04R 19/005 (2013.01); H04R 29/006 (2013.01); H04R 2201/003 (2013.01); H04R 2201/403 (2013.01); H04R 2410/03 (2013.01);
Abstract
Systems and methods for electrical testing of noise in a multi-membrane micro-electro-mechanical systems (MEMS) microphone are disclosed. The MEMS system has a test mode that includes placing the microphones' MEMS biasing networks into a reset mode, adjusting the first bias voltage for the first MEMS sensor such that a polarity matches the polarity of the bias voltage of the second MEMS sensor. The MEMS biasing networks are then placed into a sense mode, and a total noise value is obtained for the MEMS microphone system by measurement of the output of the system's preamplifier.