You can also use EM.Ferma to perform a quasi-static analysis of multi-conductor transmission line structures, which usually provides good results at lower microwave frequencies (f < 10GHz). For that purpose, check the box labeled "Perform 2D Quasi-Static Simulation" when defining the 2D solution plane. EM.Ferma computes the characteristics impedance Z<sub>0</sub> and effective permittivity ε<sub>eff</sub> of your TEM or quasi-TEM transmission line. The results are written to two output data files named "solution_plane_Z0.DAT" and "solution_plane_EpsEff.DAT", respectively, where "solution_plane" is the default name of your 2D plane. At the end of a quasi-static analysis, the electric field components and scalar potential at the selected 2D planes will still be computed and can be visualized. In the case of a parametric sweep, the data files will contain multiple data entries listed against the corresponding variable samples. Such data files can be plotted in EM.Grid.
[[Image:Info_icon.png|40px]] Click here to learn more about the theory of '''[[Modeling_Lumped_Elements,_Circuits_%26_Devices_in_EM.Cube#2D_Quasi-Static_Solution_of_Transmission_Lines Static_Solution_of_TEM_Line_Structures| 2D Quasi-Static Analysis of Transmission Lines]]'''.
[[Image:Info_icon.png|40px]] Click here to learn more about the theory of '''[[Modeling_Lumped_Elements,_Circuits_%26_Devices_in_EM.Cube#Modeling_Transmission_Lines_Using_EMUsing_EM.Ferma Ferma_to_Simulate_2D_Transmission_Lines | Modeling Transmission Lines Using EM.Ferma]]'''.
The quantities ε<sub>eff</sub> and Z<sub>0</sub> are two of EM.Ferma's standard output [[parameters]]. You can use them to optimize a transmission line structure. Two possible objectives are "Z<sub>0</sub> == 50" or "sqrt(ε<sub>eff</sub>) == 1.5".