Variable reflection angle meta-surface using double layered patch type FSS

This paper proposes the variable reflection angle meta-surface using the double layered structure which can change the scatter pattern simply by sifting other layer. It is clarified that the gradients of the element vs. the reflection phase are changed by the relative position between two layers in double layered patch type FSS (Frequency Selective Surface). It is found that the reflection angle with range of about -34 deg. to -2 deg. is obtained in the proposed meta-surface.