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. 18, 1989
Filed:
Sep. 25, 1987
Applicant:
Inventors:
Jean-Claude Cruchon, Bouffemont, FR;
Jean-Denis Schubert, Verneuil sur Seine, FR;
Assignee:
Alcatel Thomson Faisceaux Hertziens, Levallois Perret Cedex, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333205 ; 333246 ;
Abstract
An adjustable band filter comprising a conductive screening body (10, 11) made of two parts (10 and 11) joined to each other on either side of a separation plane (13), a cavity (12) inside said body, said cavity containing a half wavelength resonant line (15) carried on a first face (16) of a suspended substrate (14), the substrate being end-coupled and received in grooves (17) made in the walls of the first portion (10). The first face (16) of the substrate (14) divides the cavity (12) into two asymmetrical volumes in such a manner as to enable the passband of said filter to be modified.