Pancharatnam–Berry metasurface for terahertz wave radar cross section reduction
Li Shao-He, Li Jiu-Sheng
       

The (a)–(c) 3D and (d)–(f) 2D far-field scattering patterns of 1-bit, 2-bit, 3-bit random coding metasurfaces under LP wave normal incidence at 1.2 THz.