Dual-Band Polarization Insensitive Quad-array Slotted Type Frequency Selective Surface with Wide Angular Stability

In this work, a dual-band quad array slotted type absorber/reflector is presented for dual-band applications in smart stealth systems. The Frequency Selective Surface (FSS) is constructed from 1.6 mm thick FR4 material. The proposed FSS shows a dual-band at 5.68 and 7.94 GHz. It is also found that the proposed FSS is oblique incidence angle of the incident EM waves and insensitive to polarization. The Equivalent circuit model is also presented to understand the working principle of the FSS qualitatively.