Stacked Metasurface Slab

This paper presents stacked metasurface slabs, stacked array of cascaded meta-surfaces synthesized using a GSTC-based algorithm that circumvent fabrication difficulties in metasurfaces involving sharply varying field transformations. The specified transformation is subdivided into several smoother transformations and shared between cascaded bianisotropic metasurfaces. This algorithm relaxes the fabrication requirements dramatically.