[[Image:qstatic.png|thumb|300px|Setting up a Transmission Line simulation.]]
===2D Electrostatic Simulation Mode===
EM.Ferma's electrostatic simulation engine features a 2D solution mode where the model is treated as a longitudinally infinite structure in the direction normal to specified "2D Solution Plane". More than one 2D solution plane may be defined. In that case, multiple 2D solutions are obtained. A 2D solution plane is defined based on a "Field Sensor" definition that already exists in the project.
where η<sub>0</sub> = 120π Ω is the intrinsic impedance of the free space.
 The guide wavelength of your transmission line at a given frequency f is then calculated from: <math> \lambda_g = \frac{\lambda_g}{\sqrt{\epsilon_{eff}}} } </math> Â
=== Setting up a Transmission Line Simulation ===
To perform a transmission line simulation, first draw your structure in the project workspace just like a typical 3D structure. Define a "Field Sensor" observable in the Navigation Tree so as to capture the cross section of your structure as your desired transmission line profile. Â Next, define a "2D Solution Plane" in the Navigation Tree based on your existing field sensor. When defining the 2D plane, check the box labeled "Perform 2D Quasi-Static Simulation". If an analysis is run with this option checked, the characteristic impedance Z<sub>0</sub>. and effective permittivity ε<sub>eff</sub> will be computed for the corresponding 2D Solution Plane. Â
first turn on Quasistatic simulation mode for a selected 2D Solution Plane, as shown in the figure at right. If an analysis is run with this option checked, the characteristic impedance (Z0) and Effective Epsilon will be computed for the corresponding 2D Solution Plane. This output can be found in appropriately-named text files in the project directory upon completion of the simulation. Fields and potentials at the selected 2D plane will still be computed. Many 2D quasistatic solutions can be obtained in the same analysis, if for example, your design contains many types of [[Transmission Lines|transmission lines]].
Quasistatic analysis can only be performed with a Dirichlet boundary condition with 0V specified on the boundaries.