Abstract
This paper, proposed a frequency selective surface (FSS) with triple band-stop characteristics. The structure demonstrated can be effectively used to shield different scientific and technical applications from unwanted electromagnetic radiation. The compact unit cell consists of a cross-loop surrounded by a dodecagon. The overall dimensions of unit cell are 22 mm × 22 mm. The substrate material is RO-3003 with a dielectric constant (\(\varepsilon_{\text{r}}\)) 3 and thickness 60 mil. The dimensions of each unit cell have computed by the lowest cutoff frequency. This FSS structure is designed for the rejection of three frequency bands, 5.5 GHz, 3.5 GHz and 2.4 GHz, respectively. The proposed FSS structure provides preeminent electromagnetic shielding because of its polarization insensitivity and triple-band absorption.
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