A Frequency Selective Waveguide Filter For Microwave Applications

Frequency Selective Surfaces (FSSs) is a metallic screen with frequency selective properties which are used as spatial filters through which electromagnetic energy with a specific frequency range may be propagated. In general FSS is mainly use to filter out the interference in the coexisting channels. In this paper we proposed a band pass waveguide filter, which is mainly use in microwave applications. The proposed FSS is composed of periodic array of metallic patches separated by small gaps and metallic lines. Design procedure and measurement results of the FSS are presented and discussed.