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:
Sep. 01, 1998
Filed:
Dec. 11, 1996
Applicant:
Inventors:
Jean-Denis Schubert, Verneuil/Seine, FR;
Jean-Claude Cruchon, Bouffemont, FR;
Assignee:
Alcatel Telspace, Nanterre, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333208 ; 333212 ; 29600 ;
Abstract
A pseudo-elliptical filter includes positively coupled resonant cavities, the signal input and the signal output of each cavity being at 90.degree. to each other. At least one retro-coupling of signal between two of said cavities is constituted by a waveguide. Applications include pseudo-elliptical filters operating in the millimeter band.