Variable Reflection Angle Meta-surface using Double Layered FSS

This paper proposes the variable reflection angle meta-surface composed of the double layered FSS (Frequency Selective Surface) and the ground. The meta-surface can steer the reflection direction of the incident wave by shifting the lower FSS. It is clarified that the gradient of the reflection phase in the reflection direction steering plane (x-z plane) are changed by the shift amount of lower FSS. It is found that the reflection direction of the normal incident wave is obtained up to at 45 degrees by using the proposed meta-surface.