Calculation of effective permittivity of transmission lines with multilayered medium by using weak FEM formulation of the third order

In this paper, effective permittivity of transmission lines with rectangular cross-section and multilayered isotropic dielectric by using weak, non node-based, third-order FEM formulation, is calculated. The results were compared with the results obtained by the commercial software FEMM, which uses node-based first-order basis functions, as well as with the other results available in literature. Based on that, appropriate conclusions are made.