A Multiband Bianisotropic FSS With Polarization-Insensitive and Angularly Stable Properties

In this letter, a novel bianisotropic omega frequency selective surface (FSS) is presented. The distinctive feature of the surface is that it offers simultaneous absorptive and partial reflective operation at seven frequency bands that range from the C-band to the K-band. The maximum absorption (~ 99%) from one side is obtained at 14.312 GHz, while reflection from the other side remains between 75% and 99%. Moreover, the FSS provides the same behavior for any arbitrarily oriented linear polarized wave as well as circularly polarized waves. Furthermore, the surface is stable against oblique incidences of up to 60° at the lower frequency bands. The proposed FSS has potential applications in Fabry-Perot cavity antennas with reduced radar cross-section.