A Frequency Selective Surface-Based Dual-band Electromagnetic Shield for SATCOM Applications

A miniaturized, dual-band polarization-insensitive frequency selective surface (FSS)-based electromagnetic shield is presented for SATCOM applications. The FSS unit cell comprises a modified Jerusalem crossed loop and a corner-modified square loop, printed on a Rogers 5880 laminate, offering effective shielding in the X- and Ku-bands. The FSS manifests an angularly stable and polarization-independent response for various incident angles for both polarization states of the EM waves. Moreover, an equivalent circuit model is designed to analyze the FSS working phenomenon. A prototype of the proposed FSS is fabricated and tested for its EM performance. The simulated and measured results of the FSS show a good correlation, making it a viable candidate for selective shielding applications.