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. 26, 2016
Filed:
Oct. 17, 2013
Applicant:
Epcos Ag, Munich, DE;
Inventors:
Andreas Detlefsen, Eichenau, DE;
Mohamed Nizar Mellouli, Munich, DE;
Assignee:
EPCOS AG, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 17/00 (2006.01);
U.S. Cl.
CPC ...
H04R 17/00 (2013.01);
Abstract
A bandpass filter operates with electroacoustically active components. The bandpass filter includes a first transducer segment having a spike in the insertion loss at a first frequency fand a second transducer segment having a spike in the insertion loss at a second frequency f≠f. The frequencies fand fare chosen such that the insertion loss is smoothed.