An improved design method of slotted waveguide antennas based on complex voltage distribution

This paper proposes an improved design method of slotted waveguide antennas. Since Elliott’s design method for slotted waveguide antennas applies only to the case with real voltage distribution it is incapable of designing slotted waveguide antennas with arbitrary radiation pattern. The improved design method presented and is extends its applications to case of the complex voltage distribution including the effects of mutual coupling. The comparison of results derived by the improved method and the commercial software Ansoft HFSS shows that, the method is accurate and effective.