Periodically loaded waveguide structures

The purpose of this paper is to investigate a novel class of waveguide resonator structures using periodic metal septa for use at microwave, mm-wave, submm-wave and terahertz frequencies. Its aim is to show that this type of resonator can be easily realized with a single metal insert within circular, ridged and rectangular waveguide. One type of resonator which used quarter-wavelength metallic septa was employed. The simulated results for air-filled metal pipe rectangular and ridged waveguide resonator and filter structures using periodic metallic septa are presented.