Simple and efficient design of reconfigurable FSS with triangular patch elements

This paper proposes a reconfigurable frequency selective surface (FSS) operating in the X band composed of triangular elements periodically placed on a single FR-4 dielectric layer. The reconfiguration of the proposed FSS allows a quasi-linear variation of the rejecting resonant frequency as function of the incident wave angle. The variation of the incident wave angle is provided by rotation of the FSS structure from 0° to 40°, for the TE mode, and can be used in cognitive radio technology through a micro-controlled interface.