A Miniaturized and Polarization Independent Electromagnetic Shield for C and X-Band Applications

This paper proposes a miniaturized, polarization independent and dual band frequency selective surface (FSS) based electromagnetic shield. A corrugated FSS and zigzag square ring (ZSR) are arranged in back-to-back configuration over single-layered low-profile dielectric. This configuration not only offers shielding for both C and X-band but also achieves stable polarization independent response for these bands. Simulated and measured results verify its 30 dB average shielding over a wide band and 60° polarization independency alongside. More importantly, the equivalent circuit model analysis and analytical parameterization of this dual band configuration is also investigated. The modelling and simulations are in line with measurements that makes it as a potential shield for C and X-band wireless applications including SATCOMs, Microwave filters and many others.