CAD models for asymmetrical, elliptical, cylindrical, and elliptical cone coplanar strip lines

By the conformal mapping method, we give analytical closed form expressions for the quasi-TEM parameters for asymmetrical coplanar strip lines (ACPS's ) with finite boundary substrate. Then, based on the analysis of ACPS's, el liptical coplanar strip lines (ECPS's) and cylindrical coplanar strip lines (CCPS's), and elliptical cone coplanar strip lines (ECCPS's) are studied. Computer-aided-design oriented analytical closed-form expressions for the q uasi-TEM parameters for ACPS's, ECPS's, CCPS's, and ECCPS's are obtained. A ll of the expressions are simple and accurate for microwave circuits' desig ns and are useful for transmission-line theory and antenna theory, The reas onableness of the method and results are verified and various design curves are given.