A simple reduced size and reconfigurable element for multiband and angular stable frequency selective surface

This paper presents a simple, compact, and reconfigurable patch element geometry for multiband FSS applications. The patch element reconfigurability enables the development of reconfigurable FSS structures. The proposed FSS reconfigurability is theoretically and experimentally investigated through the use of small thin conducting strips on the FSS patch element geometry. Simulation is performed using Ansoft HFSS software. It is shown that the proposed FSS structure in different configurations can be used to cover a wide frequency range, with very good angular stability (with respect to the oblique incidence of plane waves), being suitable for wireless communication applications and cognitive radio. Simulation and measurements results are compared and a good agreement is verified.