A dynamic frequency selective surface using addressable metamaterials

In this paper, we have presented the design and experiment of a frequency selective metamaterial surface that controls the scattering of incident electromagnetic radiation. The surface consists of digitally addressable CELC metamaterials tuned to realize a spatial gradient in the reflection coefficient phase angle, resulting in a scattered field distribution that matched very closely with theoretical predictions. We showed measurements of the scattered electric field for two different potentiometer configurations, and showed peak deflection 10deg and 25deg away from the specular direction.