Analysis and design of a simple and compact bandstop Frequency Selective Surface at mobile WiMAX and satellite communication X-band

Abstract

This article presents a dual notched Frequency Selective Surface (FSS) using a compact structure. Four sub-cell square split ring resonators (SSRRs) are imprinted over 8×8 mm2 FR-4 substrate in a 90° clockwise rotational symmetric manner. Dual resonant bands are obtained at 3.08 GHz ranging from 2.5 to 3.6 GHz and 10.2 GHz ranging from 7.95 GHz to 12.3 GHz. The proposed FSS covers the WiMAX band ranging from 2.5 to 2.7 GHz and 3.3 to 3.6 GHz and entire X-band ranging from 8 to 12 GHz. The structure presents a good angular response for both TE and TM incident polarized wave for normal and oblique angles. The pass band from 4.3 GHz to 5 GHz frequency with resonant dip at 4.6 GHz is obtained. The maximum relative deviation in between transmission zero frequency and angularly incident frequency is 1.2% and 4.2% at 70° TM and TE polarized wave, respectively.