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. 08, 2008
Filed:
Jun. 08, 2005
Dominique Lo Hine Tong, Rennes, FR;
Charline Guguen, Rennes, FR;
François Baron, Cesson Sevigne, FR;
Jean-yves Le Naour, Pace, FR;
Dominique Lo Hine Tong, Rennes, FR;
Charline Guguen, Rennes, FR;
François Baron, Cesson Sevigne, FR;
Jean-Yves Le Naour, Pace, FR;
Thomson Licensing, Boulogne, Billancourt, FR;
Abstract
The present invention relates to a FINLINE type microwave band-pass filter comprising a waveguide provided with an insulating substrate placed in an E plane of the guide and comprising on at least one of the surfaces, conductive inserts electrically connected to the internal surfaces of the guide which support the substrate and which determine by their dimensions and their positioning on the substrate a Chebyshev type filter response curve. The filter includes at least one cavity in perpendicular short circuit to the substrate, the positioning and the dimensions of the cavity determining a transmission zero on the filter response curve for attenuating the frequencies situated around this zero. Such a filter is used in particular in transmission terminals operating in the Ka band.