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. 12, 2005
Filed:
Nov. 21, 2002
Serge Vigneron, Auterive, FR;
Yannick Latouche, Leguevin, FR;
Pierre Jarry, Talence, FR;
Eric Kerherve, Talence, FR;
Jean-marie Pham, Merignac, FR;
Nicolas Boutheiller, Meudon, FR;
Serge Vigneron, Auterive, FR;
Yannick Latouche, Leguevin, FR;
Pierre Jarry, Talence, FR;
Eric Kerherve, Talence, FR;
Jean-Marie Pham, Merignac, FR;
Nicolas Boutheiller, Meudon, FR;
Alcatel, Paris, FR;
Abstract
The invention relates to a quadruple mode microwave filter having coupled cavities with a plurality of transmission zeros, said filter comprising at least one rectangular parallelepiped-shaped quadruple mode cavity, at least two rectangular irises, and two input/output waveguides. Tuning and coupling of the filter are obtained exclusively by the dimensions and mutual disposition of the at least one resonant cavity and the irises, without any screw or other tuning mechanism. All the faces of the cavities and the irises are either parallel or perpendicular to each other. In a preferred embodiment the irises are offcentered along the two transverse axes. According to one advantageous feature, the input mode and the output mode are the same, preferably the TE 10 fundamental mode.