A Triple Band-Pass Polarization Insensitive and Angular Stable Frequency Selective Surface

Abstract

Abstract-A polarization insensitive triple band-pass frequency selective surface (FSS) is proposed. The three passband of the FSS exhibits bandwidth of 35.37%, 11.86 %, 19.28 % centered at 2.68 GHz, 6.88 GHz and 10.51 GHz, respectively. The structure is designed on one side of a single-layer FR4 substrate. The insertion loss in the three bands is better than-2 dB up to an oblique incidence angle of 60 °, confirming the angular stability of the proposed FSS. The measurement carried out on the 27 x 27 array of fabricated prototype of the bandpass FSS validates the result obtained in simulation. © 2021 IEEE.