US 11,962,088 B2
Dual-mode orbital angular momentum (OAM) base cell array and metasurface preparation method
Zhixiang Huang, Hefei (CN); Junjie Han, Hefei (CN); and Jie Wu, Hefei (CN)
Assigned to Anhui University, Hefei (CN)
Filed by Anhui University, Hefei (CN)
Filed on Jun. 14, 2022, as Appl. No. 17/839,876.
Claims priority of application No. 202210041244.9 (CN), filed on Jan. 14, 2022.
Prior Publication US 2023/0231315 A1, Jul. 20, 2023
Int. Cl. H01Q 15/00 (2006.01); H01Q 1/38 (2006.01); H01Q 1/50 (2006.01)
CPC H01Q 15/0086 (2013.01) [H01Q 1/38 (2013.01); H01Q 1/50 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dual-mode orbital angular momentum (OAM) convergence base cell array, wherein the base cell array comprises 2n(2n−1) anisotropic cell structures and 2n isotropic cell structures; and the base cell array has an array structure of 2n×2n, n denoting a bit number;
each of the anisotropic cell structures comprises a bottom ground layer, a dielectric substrate layer and a top pattern layer which are disposed in sequence from bottom to top, the top pattern layer of the anisotropic cell structure having an axisymmetric H-shaped structure; and
each of the isotropic cell structures comprises a bottom ground layer, a dielectric substrate layer and a top pattern layer which are disposed in sequence from bottom to top, the top pattern layer of the isotropic cell structure having a square structure.