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. 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.
Many 2D quasi-static solutions can be obtained in the same analysis,for example, when your design contains many types of [[Transmission Lines|transmission lines]]. 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.
For === Optimizing a step-by-step demonstration (including transmission line [[optimization]]), take a look at this video on our YouTube channel: [http://www.youtube.com/watch?vTransmission Line ===Iiu9rQf1QI4 EM.CUBE Microstrip Optimization]
In an [[optimization]] simulation, the values of one or more [[variables]] are varied over their specified ranges, and a design objective is tested at each simulation run. A design objective is typically a logical expression that sets an expression equal to a target value. EM.Ferma currently offers two standard outputs: ε<sub>eff</sub> and Z<sub>0</sub>. Two possible objectives are "Z<sub>0</sub> === Transmission Line Characteristics =50" or "sqrt(ε<sub>eff</sub>) ==1.5". To define an objective, click the "Objectives" button of the Simulate Toolbar, or select the "Objectives" item of the Simulate Menu, or simply use the keyboard shortcut "Ctrl+J". In the Objectives Dialog, you can add new objective or edit the existing objectives.
In EM.Ferma's quasistatic mode, transmissionFor a step-by-step demonstration (including transmission line [[parametersoptimization]] Z0 and EpsEff are computed), in addition to output due to the Field Sensor, which is required to define the 2D solution planetake a look at this video on our YouTube channel: [http://www. Text files corresponding to these observables will be placed in the project's working directory after each analysisyoutube.com/watch?v=Iiu9rQf1QI4 EM.CUBE Microstrip Optimization]
== Simulation Examples / Gallery ==