Figure 1
From: Coding metamaterials, digital metamaterials and programmable metamaterials
The 1-bit digital metasurface and coding metasurface. (a) The 1-bit digital metasurface is composed of only two types of elements: ‘0’ and ‘1’. (b) A square metallic patch unit structure (inset) to realize the ‘0’ and ‘1’ elements and the corresponding phase responses in a range of frequencies. (c, d) Two 1-bit periodic coding metasurfaces to control the scattering of beams by designing the coding sequences of ‘0’ and ‘1’ elements: (c) the 010101…/010101... code and (d) 010101…/101010... code.
