Parametric analysis of a band-pass FSS for double glazed soft-coated energy saving glass

Parametric analysis of a band-pass FSS for double glazed soft-coated energy saving glass is presented. An aperture type hexagonal FSS is etched in the coating to improve transmission of useful RF/MW signals which is attenuated due to its presence. It provides a transmission improvement of up to 20 dB in the band of 0.1 GHz to 2.3 GHz. The amount of area etched due to aperture is minimized to avoid heat loss. Parameters such as glass dielectric constant, coating impedance and aperture width are varied to get optimal solution. More than 10 dB and 25 dB attenuation is obtained at 2.45 GHz and 5.25 GHz, respectively, to ensure WLAN security for an indoor environment. Theoretical results for TE and TM polarizations are presented for normal and oblique incidence.