US 11,658,421 B2
Antenna with improved coverage over a wider frequency band
Nicolas Attaja, Paris (FR); Mauro Ettorre, Paris (FR); Ronan Sauleau, Rennes (FR); and Davy Guihard, Paris (FR)
Assigned to ARIANEGROUP SAS, Paris (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE DE RENNES 1, Rennes (FR)
Filed by ARIANEGROUP SAS, Paris (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE DE RENNES 1, Rennes (FR)
Filed on Sep. 3, 2021, as Appl. No. 17/466,107.
Claims priority of application No. 2009240 (FR), filed on Sep. 11, 2020.
Prior Publication US 2022/0085500 A1, Mar. 17, 2022
Int. Cl. H01Q 9/28 (2006.01); H01Q 1/28 (2006.01); H01Q 21/26 (2006.01); H01Q 21/30 (2006.01); H01Q 19/10 (2006.01)
CPC H01Q 9/285 (2013.01) [H01Q 1/288 (2013.01); H01Q 19/108 (2013.01); H01Q 21/26 (2013.01); H01Q 21/30 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An antenna comprising:
a radiative antenna element able to emit a signal in at least a first frequency band and in a second frequency band, disjoint from the first band and at a higher frequency than the first band, and
a waveguide covered by the radiative antenna element, comprising at least a first resonant and single mode or mostly single-mode cavity and a second resonant cavity separate from the first resonant cavity and located inside the latter, said second resonant cavity being single-mode or mostly single-mode in the second frequency band, wherein a ratio RA1 H1/H2 is between 1 and 3.25, where H1 denotes a height of the first cavity and H2 denotes a height of the second cavity.