Following a previous question I had (3DSwym CST - How to use CST as a 2D mode solver for quasi-TEM transmission line analysis), I want to use the same methodology from the cable simulator in a structure such as the one on the picture. Such structure is similar to a CPW line, but the tiny layers below the middle strip make the theory for CPW metal tracks unfit. One approach is to do the full 3D simulation, but due to the small thickness of the layers, a very fine mesh is necessary, thus 3D simulation is not feasible. The structure, however, supports quasi-TEM modes, which renders the transmission line theory a good approximation and thus the application of the methodology of the cable simulator applicable "In the second step the primary transmission line parameter per unit length (R’, L’, C’, G’) is calculated from each segment by a static 2D field solver." (Taken from the documentation on Cable Simulator). I haven't been able to figure out how to do this. Any thoughts?
