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:
Jan. 31, 2017
Filed:
May. 21, 2012
Applicant:
Ivan Riis Nielsen, Stenløse, DK;
Inventor:
Ivan Riis Nielsen, Stenløse, DK;
Assignee:
EPCOS AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/36 (2006.01); H03F 3/45 (2006.01); H03F 1/26 (2006.01); H03F 3/181 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01); H04R 3/00 (2006.01); H03F 3/21 (2006.01); H04R 19/04 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45475 (2013.01); H03F 1/0272 (2013.01); H03F 1/26 (2013.01); H03F 1/56 (2013.01); H03F 3/181 (2013.01); H03F 3/211 (2013.01); H03F 3/45273 (2013.01); H04R 3/00 (2013.01); H03F 2200/135 (2013.01); H03F 2200/387 (2013.01); H03F 2200/48 (2013.01); H03F 2203/45166 (2013.01); H03F 2203/45288 (2013.01); H04R 19/04 (2013.01);
Abstract
The present disclosure relates to an amplifier circuit () for a capacitive transducer (), comprising a preamplifier () adapted to receive a transducer signal through an input node () and to provide an amplified signal at an output node (), and a transconductance amplifier () comprising a first input () and an output (), wherein the first input () of the transconductance amplifier () is connected to the output node (), and the output () of the transconductance amplifier () is connected to the input node ().