Abstract

The paper presents analytical approximations for the conductor, dielectric and radiation losses of asym­metric coplanar waveguides. The expression for the conductor losses is obtained through an extension of Owyang and Wu's conformal mapping approach [17]; the dielectric losses are estimated according to the so-called plane-wave approach [2]; finally, the analysis of radiation losses follows Rutledge's approach [19]. Comparisons with experimental results or numerical data derived from quasi-static or full-wave approaches are performed to validate the expressions presented.