US 12,438,271 B2
Nonreciprocal beam steerable metasurfaces
Sajjad Taravati, Toronto (CA); and George V. Eleftheriades, Scarborough (CA)
Assigned to Latys Intelligence Inc., Montreal (CA)
Appl. No. 18/035,826
Filed by Latys Intelligence Inc., Montreal (CA)
PCT Filed Nov. 9, 2020, PCT No. PCT/CA2020/051514
§ 371(c)(1), (2) Date May 8, 2023,
PCT Pub. No. WO2022/094686, PCT Pub. Date May 12, 2022.
Prior Publication US 2023/0411844 A1, Dec. 21, 2023
Int. Cl. H01Q 15/00 (2006.01); H01Q 3/46 (2006.01)
CPC H01Q 3/46 (2013.01) 18 Claims
OG exemplary drawing
 
1. A metasurface for beam steering comprising:
two dielectric layers;
a conductor layer interposed between the two dielectric layers; and
at least one meta-atom electrically connected to each of the two dielectric layers,
the at least one meta-atom comprising at least one non-reciprocal tunable phase shifter and at least one antenna element,
such that wherein when an incident electromagnetic signal wave having a given frequency is received at the metasurface at an angle of reception, the metasurface transmits emits a transmitted wave having an identical frequency to the given frequency of the incident wave and having an angle of transmission different from the angle of reception, wherein the at least one meta-atom is biasable with a modulation signal configured to have the angle of transmission different from the angle of reception.