Results of a numerical solution to the lossy waveguide problem

Summary form only given. A numerical solution of the lossy waveguide problem has been obtained which directly accounts for conductor and dielectric loss. The waveguide is assumed to have a homogeneous dielectric completely enclosed by a homogeneous conductor. The conductor is assumed to be sufficiently thick that negligible radiation exists outside the waveguide. With the exception of the above restrictions, the cross-sectional geometry is arbitrary. The propagation constant of the lossy waveguide is determined by solving a set of coupled integral equations using the method of moments (MOM). The desired propagation constants correspond to the nulls in the determinant of the matrix created by the MOM technique. Results have been obtained for three waveguide structures-rectangular, circular, and ridged waveguides.<>