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. 08, 2026
Filed:
Dec. 28, 2023
Thales, Meudon, FR;
Institut National Des Sciences Appliquees DE Rennes, Rennes, FR;
Universite DE Rennes, Rennes, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Centralesupelec, Gif sur Yvette, FR;
Nantes Universite, Nantes, FR;
THALES, Meudon, FR;
INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE RENNES, Rennes, FR;
UNIVERSITE DE RENNES, Rennes, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
CENTRALESUPELEC, Gif sur Yvette, FR;
NANTES UNIVERSITE, Nantes, FR;
Abstract
A dual-band analogue filter that is passing for IFF signals and ADS-B signals in a first and a second frequency band, and to reject signals received outside these bands, implemented using multi-planar technology, and comprising, in succession: a layer comprising an input port and an output port, a layer comprising a ground plane having openings facing the input port and the output port, a layer comprising N band-pass resonators, a layer comprising N band-stop resonators, arranged such that: the band-pass resonators are connected in pairs by coupling, the first and the last band-pass resonator are connected to the input port and the output port by electromagnetic coupling, each band-pass resonator is connected to a band-stop resonator by electromagnetic coupling.