US 12,142,832 B2
Metasurface device
Jean Chazelas, Paris (FR); and Charlotte Tripon-Canseliet, Issy les Moulineaux (FR)
Assigned to ULTIMETAS, Paris (FR); PARIS SCIENCES ET LETTRES, Paris (FR); ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, Paris (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and SORBONNE UNIVERSITE, Paris (FR)
Appl. No. 18/017,852
Filed by ULTIMETAS, Paris (FR); PARIS SCIENCES ET LETTRES, Paris (FR); ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, Paris (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and SORBONNE UNIVERSITE, Paris (FR)
PCT Filed Jul. 20, 2021, PCT No. PCT/EP2021/070288
§ 371(c)(1), (2) Date Jan. 24, 2023,
PCT Pub. No. WO2022/023125, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2008095 (FR), filed on Jul. 30, 2020.
Prior Publication US 2023/0275356 A1, Aug. 31, 2023
Int. Cl. H01Q 15/00 (2006.01); H01Q 3/24 (2006.01); H01Q 3/26 (2006.01)
CPC H01Q 15/0086 (2013.01) [H01Q 3/247 (2013.01); H01Q 3/2676 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A metasurface device comprising:
a substrate having a rear surface and a front surface, an emission and/or reception device able to emit and/or receive an electromagnetic wave, the emission and/or reception device being configured and arranged such that the wave is able to propagate in the form of a surface wave over the front surface of the substrate,
an antenna element comprising a two-dimensional array of conductive patches arranged on the front surface of the substrate and spaced from one another and having dimensions smaller than the operating wavelength of the emission and/or reception device,
the substrate comprising a ground structure able to be in an insulating state, wherein the ground structure prevents the propagation of the surface wave over the front surface of the substrate, from the emission and/or reception device to the conductive patches, or vice versa, and in a conductive state, wherein the ground structure has the ground plane function, allowing the propagation of the surface wave over the front surface of the substrate, from the emission/reception device to the conductive patches, or vice versa, the ground structure being able to change from the insulating state to the conductive state through illumination of the ground structure at a wavelength called a switching wavelength.