Analysis of Multimodes Coplanar Lines for Microwave Integrated Circuits Applications

Multimodes coplanar lines with arbitrary cross-section shape are analysed by the spectral domain technique. Two approaches possible in the calculations of the properties of multiconductor printed transmission lines are proposed, discussed and compared to each other. The dispersion characteristics of some new and modified coplanar transmission lines are presented to show the universality of the proposed analytical formulation. This formulation can be also easy extended for the analysis of another coupled waveguiding structures like, for example, uni- or bilateral fin-lines.