Enhancement of antenna parameters of slotted waveguide antennas using metamaterials

Some of the benefits of integrating metamaterial structures into slotted waveguide antennas are addressed in this paper. The metamaterials developed for this application are based on the split-ring resonator design. These metamaterial structures were modeled in a vertical orientation located on top of the slots of the antenna. The enhancement of antenna performance with the addition of metamaterial structures is evident in the data resulting in 38% increase in directivity and gain and giving rise to 17% narrower beamwidth of the slotted waveguide antenna. The next phase of the project is to manufacture the metamaterial slotted waveguide antenna and validate the simulation results.