US 12,469,949 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. 18/018,030
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/EP2021/070295
§ 371(c)(1), (2) Date Jan. 25, 2023,
PCT Pub. No. WO2022/023126, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2008101 (FR), filed on Jul. 30, 2020.
Prior Publication US 2023/0268633 A1, Aug. 24, 2023
Int. Cl. H04B 10/43 (2013.01); H01Q 1/06 (2006.01); H01Q 1/12 (2006.01); H01Q 1/24 (2006.01)
CPC H01Q 1/06 (2013.01) [H01Q 1/1207 (2013.01); H01Q 1/24 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A metasurface device comprising:
a substrate having a rear surface and a front surface, the substrate comprising a ground structure able to have a ground plane function,
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 electrically conductive patches arranged on the front surface of the substrate, spaced from one another and having dimensions smaller than the operating wavelength of the emission and/or reception device, the antenna element being able to radiate, under the effect of the propagation of a surface wave over the front surface of the substrate, in a direction having a component perpendicular to the front surface of the substrate when the ground structure has a ground plane function, the substrate comprising a layer, called a connection layer, made of photoconductive semiconductor material, in direct physical contact with the conductive patches, the semiconductor material being insulating when it is not illuminated and able to be conductive when it is illuminated at a wavelength called a reconfiguration wavelength.