SYMMETRY CONSIDERATIONS APPLIED TO 3-D DYADIC GREENS-FUNCTIONS FOR 3-PORT INHOMOGENEOUS MICROSTRIP FERRITE CIRCULATOR

Compacted perimeter 3-D dyadic Green's functions are derived under thr eefold symmetry for a circular ferrite circulator which is radially in homogenous. It is demonstrated how the perpendicular electric field, a nd therefore the s-parameters, may be determined with these dyadic Gre en's functions. A large reduction in the number of dyadic Green's func tion elements required for numerical evaluation results, simplifying a ll formulas dependent upon these elements. (C) 1998 John Wiley & Sons, Inc.