An ultra-wideband pattern reconfigurable antenna based on graphene coating

Jiang YanNan^{1, 2, 3}, Yuan Rui¹, Gao Xi^{1, 2}, Wang Jiao^{1, 2, 3, †,}, Li SiMin², Lin Yi-Yu^{1, 2}

Simulated S₁₁. (a) The monopole and the proposed antenna for different d. (b) The proposed antenna for different Z_s.