Moment method solutions for polarization agile slots in bifurcated waveguide

Computational models, based on the moment method, are described for nonrect angular slots in both the broad and side walls, respectively, of E-plane an d H-plane bifurcated waveguides. These slots permit the realisation of pola risation agility in slotted-waveguide array antennas. The slots, which are generally T-shaped, display a three dimensional form and this introduces an additional level of complexity into the formulation of a moment method sol ution for the electromagnetic boundary value problem represented by the slo t. The steps introduced to accommodate this problem are described. Computat ional results for some of the slot geometries examined are presented and th ese are shown to be in broad agreement with measured values.