• Mechanical 144GHz beam steering with all-metallic epsilon-near-zero lens antenna 

      Pacheco Peña, Víctor Upna; Torres Landívar, Víctor Upna; Orazbayev, Bakhtiyar Upna; Beruete Díaz, Miguel Upna; Navarro Cía, Miguel Upna; Sorolla Ayza, Mario Upna; Engheta, Nader (AIP Publishing, 2014)   Artículo / Artikulua  OpenAccess
      An all-metallic steerable beam antenna composed of an ε-near-zero (ENZ) metamaterial lens is experimentally demonstrated at 144 GHz (λ0 = 2.083 mm). The ENZ lens is realized by an array of narrow hollow rectangular waveguides ...
    • Tunable beam steering enabled by graphene metamaterials 

      Orazbayev, Bakhtiyar Upna; Beruete Díaz, Miguel Upna; Khromova, Irina Upna (Optical Society of America, 2016)   Artículo / Artikulua  OpenAccess
      We demonstrate tunable mid-infrared (MIR) beam steering devices based on multilayer graphene-dielectric metamaterials. The effective refractive index of such metamaterials can be manipulated by changing the chemical potential ...