Dispersion characteristics of anisotropic guided-wave structures are analyzed by edge-element method in this paper. This approach can be applied to the case in which the permittivity tensor matrix is full
and no spurious solutions appeared in calculation. An eigenvalue equation which can provide direct solution for the propagation constant is also derived. Computed results of anisotropic microstrip line and rectangular dielectric waveguide agree well with data given in the literature
the effectiveness of this method is thus justified.