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:
Feb. 26, 2002
Filed:
Jan. 18, 2000
Applicant:
Inventors:
Peter Selmeier, Maitenbeth, DE;
Maximilian Pitschi, Rottach-Egern, DE;
Assignee:
EPCOS AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 ;
U.S. Cl.
CPC ...
H03H 9/64 ;
Abstract
A surface acoustic wave (SAW) filter having an improved edge steepness includes at least three resonators connected in series and/or parallel with one another. An edge steepness of a pass band is improved if a plurality of resonators with different finger periodicities of interdigital transducers are provided.