An all-dielectric band-stop frequency-selective surface

Abstract

In this paper, an all-dielectric band-stop frequency-selective surface (FSS) is proposed for X-band applications. The unit particle of the FSS consists of a thick upper hexagonal prism part and a thin lower hexagonal prism part for monolithic construction. The proposed FSS has a planar array of hexagonal ceramic prisms with a honeycomb-shaped structure. The proposed FSS has three resonant dips. These are combined to establish a -10 dB fractional bandwidth (FBW) with a broad stop-band of 31.8% (center frequency of 9.75 GHz). To demonstrate the resonant characteristic modes, cylindrical cavity mode analysis based on cylindrical wave functions is used.