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:
May. 17, 2005
Filed:
Feb. 14, 2003
Applicant:
Andreas Detlefsen, Munich, DE;
Inventor:
Andreas Detlefsen, Munich, DE;
Assignee:
EPCOS AG, Münich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H009/64 ;
U.S. Cl.
CPC ...
Abstract
For improving the adjacent channel selectivity of a resonator filter, reflectors of resonators are differently designed so that the minimums of the reflection functions of different reflectors of a resonator are shifted relative to one another and preferably compensate with the corresponding maximum of the respectively other reflection function. This reduces noise spikes at the low-frequency side of the pass-band of corresponding resonator filters and, thus, improves the adjacent channel selectivity.