Narrowband BPF Made of Waveguide Loaded by SRR-based Frequency Selective Surfaces

Abstract

This paper deals with the development of narrowband bandpass filter (BPF) made of a waveguide loaded by split ring resonator (SRR) based frequency selective surfaces (FSS). The structure of FSS loaded into the waveguide is developed by two layers of Arlon DiClad 527 dielectric substrate flank some structures of SRR. Two different configurations of SRR-based FSS structure, i.e. one SRR and two SRRs, are involved in the design of narrowband waveguide BPF and analyzed in terms of working bandwidth, return loss, and transmission loss. The results show that the waveguide BPF with two SRRs has a wider working bandwidth and better performance compared to the other with one SRR. The realized narrowband waveguide BPF with two SRRs has the working bandwidth of 240MHz in the frequency range of 7.32GHz to 7.56GHz which has good agreement with the simulation.