Dyadic Green´s functions for circular waveguides filled with biisotropic media

This paper presents an alternative approach to the method of G_m for constructing the complete eigenfunction expansions of the dyadic Green´s functions for circular waveguides with perfectly conducting walls and filled with homogeneous biisotropic media. The eigenfunction expansions are constructed using the discontinuity relations obtained from Maxwell´s dyadic equations treated in the distribution sense. The orthogonality relations for waveguide modes are derived based on the modified reciprocity theorem involving a complementary medium. To illustrate the distinctions between different sets of biisotropic constitutive relations, the dyadic Green´s functions are determined for Post-Jaggard and Drude-Born-Federov relations