Design of a frequency selective surface with multiple four legged Slots

Abstract

A design is presented for a triple band frequency selective surface (FSS) with triple-four-legged loaded slots elements. The resonant element considered is four legged loaded slot (FLLS). The frequency response curve of the FSS varies with respect to the scaling factors of the slots. An optimal scaling factor has been proposed for the slots such that it provides wide and multiple bands. These kinds of reflectors make structures low profile by providing the flexibility in mounting them closer to antenna without disturbing the impedance bandwidth and providing a good gain control in the main beam direction. Its frequency performance is obtained by using numerical simulation software HFSS based on finite-element method (FEM)