Analytical and numerical modeling of reconfigurable reflecting metasurfaces with capacitive memory

In this article, we develop analytical-numerical models for reconfigurable reflecting metasurfaces formed by chessboard-patterned arrays of metallic patches. These patch are loaded with varactor diodes in order to enable surface impedance and reflection phase control. Two types analytical considered. The first model based on the effective medium approach is used predict metasurface reflectivity. second Bloch wave dispersion same structure understood as a two-dimensional transmission line metamaterial. latter study ways suppress parasitic resonances finite-size beamforming metasurfaces. We validate developed full-wave numerical simulations. Finally, outline design control network capacitive memory that may allow independent programming individual unit cells metasurface.