Resonance characteristics of longitudinal shunt slots in a planar slotted-waveguide antenna

Shows how an entire domain moment method can be employed to accurately investigate the effect of both internal and external mutual coupling on the resonant properties of slots in a planar slotted-waveguide antenna. The analysis is initiated by establishing a set of integral equations. Instead of assuming the field distribution on the slots, a set of basis functions are employed to simulate precisely the field. Galerkin´s method is applied to transform the integral equations into a matrix equation. Resonant length and resonant conductance are computed in the presence of both internal and external mutual coupling. The results are in good agreement with experimental measurement