Disclosed are techniques for implementing coplanar waveguide transmission lines in an electronic design. These techniques identify one or more electrically conductive shapes and a plurality of edge segments thereof in an electronic design. A plurality of model trace segments may be constructed based in part or in whole upon a plurality of edge segments. One or more coupled line groups may be generated with the plurality of model trace segments and one or more actual trace segments for a model of the electronic design. Electrical analyses or simulations may be performed on the model to generate electrical analysis results. The electronic design may then be devised or revised based on extracted parameter values of the electrical analysis results.