Cm. Krowne, FERRITE MICROSTRIP CIRCULATOR 3D DYADIC GREENS-FUNCTION WITH PERIMETER INTERFACIAL WALLS AND INTERNAL INHOMOGENEITY, Microwave and optical technology letters, 15(4), 1997, pp. 235-242
Imperfect walls at the device perimeter are allowed. A new dyadic Gree
n's function is found by specification of the source as a finite-lengt
h singularity in the z direction on the device boundary contour at loc
ation phi' and the use of mode matching. The new dyadic Green's functi
on allows fields and s parameters to be found, dependent on the extern
al material parameters. (C) 1997 John Wiley & Sons, Inc.