A Stability Analysis of Miniaturized Hybrid Frequency Selective Surface

A novel study of angular stability of a miniaturized frequency selective surface FSS operating at 2 GHz is presented and analyzed. The proposed hybrid FSS is mainly composed of metallic periodic circle ring and rectangular patches. The array of metallic patches is composed of a coupled inductive and capacitive surfaces created between adjacent edges of two strip of ring. Furthermore, this FSS structure has large angular stability with keeping the center frequency deviation below 0.5 % under different polarizations and incident angles. The proposed hybrid FSS structure has been fabricated and tested. A good agreement between the simulated and measured results, which validates the performance stability of the FSS structure.