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:
Apr. 11, 2017
Filed:
Dec. 17, 2014
Thales, Neuilly-sur-seine, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Centre National D'etudes Spatiales, Paris, FR;
Nicolas Jolly, Bosmie L'Aiguille, FR;
Aurelien Perigaud, Panazol, FR;
Olivier Tantot, Limoges, FR;
Nicolas Delhote, Limoges, FR;
Stephane Bila, Verneuil/sur/Vienne, FR;
Serge Verdeyme, Aixe/sur/Vienne, FR;
Damien Pacaud, Beaumont/sur/Leze, FR;
Laetitia Estagerie, Tournefeuille, FR;
THALES, Courbevoie, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
CENTRE NATIONAL D'ETUDES SPATIALES, Paris, FR;
Abstract
A frequency tunable microwave bandpass filter comprises a resonator, including: a cavity with conducting wall substantially cylindrical with axis Z having height H, and partially closed at both ends; and a dielectric element inside the cavity. The resonator resonates at two perpendicular polarizations having distributions of electromagnetic field in the cavity deduced from eachother by 90° rotation. The element rotates about an axis substantially perpendicular to axis Z, between a first and second position. The element comprises a first end wherein: in a first position the element is disposed substantially in a plane perpendicular to axis Z and the center of the first end is disposed at a height in the cavity corresponding substantially to an electric field minimum; and in a second position the element is substantially parallel to Z and the first end is disposed in a plane corresponding to an electric field maximum within +/−30%.