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:
Jul. 28, 1981
Filed:
Jul. 24, 1979
Applicant:
Inventors:
Hermann Betzl, Munich, DE;
Ernst Hebenstreit, Munich, DE;
Roland Schreiber, Ottobrunn-Riemerling, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; G11C / ;
U.S. Cl.
CPC ...
333165 ; 333173 ;
Abstract
An electrical filter circuit comprising charge transfer devices formed as lines consisting of individual CTD elements formed as four-terminal resonators formed as closed looped circuits and which determine the frequency-dependent transmission behavior of the filter circuit and wherein the four-terminal resonators are interconnected by way of a coupling circuit. In the invention, the filter circuit functions as a separating and shunt circuit and can be formed as an integrated circuit with two end resonators designed as self-contained closed looped circuits.