Stable scanning angle, polarization-insensitive band-stop frequency selective surface for wireless communication

The main objective of this paper is to design a Frequency Selective Surface (FSS) generating multi stop-band and having the property of a large scanning angle from a mixed polarization insensitivity structure for GPS, PCS, WiFi, IEEE S-band radar, 5G mobile phones, (802.11j) WLAN applications. To fulfill the objective, a hexa band-stop FSS has been developed using a novel symmetrical structure with a compact dimension of \(0.095{\lambda }_{0}\times 0.095{\lambda }_{0}\) $0.095{\lambda }_0\times 0.095{\lambda }_0$ , where \({\lambda }_{0}\) ${\lambda }_0$ is the wavelength of free space at 1^st resonant frequency. The proposed FSS covers a broad scanning angle of \({60}^{0}\) ${60}^0$ for shielding electromagnetic wave radiation and smaller resonant frequency ratio ( \({f}_{n+1}/{f}_{n}\) $f_{n+1}/f_n$ ) to improve compactness under TE and TM polarizations. The six achieved stop frequency bands are 1.36 GHz–1.56 GHz, 1.66 GHz–1.99 GHz, 2.34 GHz–2.46 GHz, 3.08 GHz–3.42 GHz, 3.6 GHz–4.12 GHz and 4.5 GHz–5 GHz for improving shielding performance.