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POSTFEKO
POSTFEKO, the Feko post processor, is used to display the model (configuration and mesh), results on graphs and 3D views.
Tools
POSTFEKO has a collection of tools that allows you to quickly validate the model, for example, measure distances, measure angles and finding specific mesh elements.
Highlighting Specific Mesh Elements
The mesh highlight tool allows you to view areas of the mesh where specific model settings are applied.

Welcome
Release Notes
See what's new in the latest release.
Get Started
The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
Examples
The Feko Example Guide contains a collection of examples that teaches you Feko concepts and essentials.
Introduction to Feko
Feko is a comprehensive electromagnetic solver with multiple solution methods that is used for electromagnetic field analyses involving 3D objects of arbitrary shapes.
CADFEKO
CADFEKO is used to create and mesh the geometry or model mesh, specify the solution settings and calculation requests in a graphical environment.
POSTFEKO
POSTFEKO, the Feko post processor, is used to display the model (configuration and mesh), results on graphs and 3D views.
- Introduction to POSTFEKO
  Use POSTFEKO to validate meshed geometry and analyse and post-process results.
- Quick Tour of the POSTFEKO Interface
  View the main elements and terminology in the POSTFEKO graphical user interface (GUI).
- Preferences
  POSTFEKO has various default settings that you can configure to customise it to your preference.
- Rendering Options
  A number of rendering options are available to ensure that 3D models and graphs (containing a large number of sample points) are rendered efficiently.
- Model and Project Basics
  You can add a model, open an existing project and save the project.
- Data Import
  Import text files, native data files and Touchstone format files.
- Data Export
  POSTFEKO supports the export of native file formats. These files can be exported to use in other sessions or when further post-processing is required.
- Terminology
  The terms, dataset, slice, trace and 3D result, are used extensively in the documentation. Review the definitions to get a better concept of these definitions.
- Graphs (Cartesian, Polar and Smith Charts)
  Display result data on a graph to allow visual interpretation of the data in a human-readable format, as well as to communicate the results in reports and presentations.
- Cartesian Surface Graphs
  A Cartesian surface graph is a flat colour plot with results plotted against two independent axes.
- 3D Views
  View the simulation data in a 3D view to allow visual interpretation of the data in a human-readable format, as well as to communicate the results in reports and presentations. The 3D view can also be used to verify that the CADFEKO or EDITFEKO model is correct.
- Frequency Domain Results
  The Solver contains a number of frequency domain solution methods, as well as a time domain solution method. By default, all simulation results are obtained in the frequency domain, unless explicitly using the time analysis tool in POSTFEKO to convert the results to the time domain.
- Time Domain Results
  With the time analysis tool in POSTFEKO, electromagnetic scattering problems can be analysed in the time domain. The time domain results are obtained by applying an inverse fast Fourier transformation (IFFT) on the frequency domain simulation results.
- Animation
  Use animation to obtain a better understanding of results or export the animation to use in a presentation or report.
- Generating Reports
  POSTFEKO is a useful tool to help analyse and present data in a useful format. It is often required to use the processed results in a report or presentation. To help make it easier to generate these reports, several tools are available in POSTFEKO.
- Lua Scripting
  Feko provides a powerful scripting language that allows you to create scripts that control CADFEKO and POSTFEKO.
- Tools
  POSTFEKO has a collection of tools that allows you to quickly validate the model, for example, measure distances, measure angles and finding specific mesh elements.
  - Measuring a Distance
    The measure distance tool allows you to measure or validate the physical distance between two points in a model.
  - Measuring an Angle
    Use the angle measuring tool to measure or validate the angle (in degrees) between three points in a model.
  - Highlighting the Non-Included Angle
    Use the include angle highlighting tool to show the non-included angle between flat mesh triangles.
  - Finding Elements
    Locate specific mesh elements by element number (ID) in the 3D view.
  - Confirming Mesh Connectivity
    The mesh connectivity tool allows you to view free edges in the 3D view.
  - Viewing Domain Connectivity
    The domain connectivity tool allows you to view parts in the 3D view that are connected using domain connectivity.
  - Highlighting Specific Mesh Elements
    The mesh highlight tool allows you to view areas of the mesh where specific model settings are applied.
- Math Functions in POSTFEKO
  View the list of supported math functions.
- Files Generated by POSTFEKO
  View the files associated and generated by POSTFEKO.
- Default Shortcut Keys
  View the shortcut keys available for POSTFEKO for faster and easier operation of POSTFEKO.
EDITFEKO
EDITFEKO is used to construct advanced models (both the geometry and solution requirements) using a high-level scripting language which includes loops and conditional statements.
Feko Solution Methods
One of the key features in Feko is that it includes a broad set of unique and hybridised solution methods. Effective use of Feko features requires an understanding of the available methods.
Optimisation in Feko
Feko offers state-of-the-art optimisation engines based on generic algorithm (GA) and other methods, which can be used to automatically optimise the design and determine the optimum solution.
Feko Utilities
The Feko utilities consist of PREFEKO, OPTFEKO, ADAPTFEKO, the Launcher utility, Updater and the crash reporter.
Description of the Output File of Feko
Feko writes all the results to an ASCII output file .out as well as a binary output file .bof for usage by POSTFEKO. Use the .out file to obtain additional information about the solution.
Feko Application Macros
A large collection of application macros are available for CADFEKO and POSTFEKO.
Scripts and Application Programming Interface (API)
CADFEKO and POSTFEKO have a powerful, fast, lightweight scripting language integrated into the application allowing you to create models, get hold of simulation results and model configuration information as well as manipulation of data and automate repetitive tasks.
Appendix
Reference information is provided in the appendix.

Highlighting Specific Mesh Elements

The mesh highlight tool allows you to view areas of the mesh where specific model settings are applied.

On the 3D View contextual tabs set, on the Mesh tab, in the Tools group, click the

Highlight icon. From the drop-down list select one of the following:

None

No mesh elements are highlighted.
Lossy metal

Highlight mesh elements (faces, wires) with a metallic medium and thickness applied to it.
Coating

Highlight mesh elements (faces, wires, edges) with a coating (layered dielectric) applied to it.
CFIE / MFIE

Highlight mesh elements (faces) with either a combined field integral equation (CFIE) or magnetic field integral equation (MFIE) applied to it.
EFIE

Highlight mesh elements (faces) with the electric field integral equation (EFIE) applied to it.
Impedance sheet

Highlight mesh elements (wires, faces) with an impedance sheet applied to it.
Surface impedance approximation

Highlight faces that bound a region set to the dielectric surface impedance approximation.
Physical Optics

Highlight mesh elements (faces) with the physical optics (PO) solution method applied to it.
Physical Optics (Fock regions)

Highlight mesh elements (faces) with the physical optics (PO) solution method applied to a Fock region.
Ray Launching GO

Highlight mesh elements (faces) with the ray launching geometrical optics (RL-GO) solution method applied to it.
Uniform Theory of Diffraction

Highlight mesh elements (faces) with the uniform theory of diffraction (UTD) solution method applied to it.
Faceted Uniform Theory of Diffraction

Highlight mesh elements (faces) with the faceted uniform theory of diffraction (faceted UTD) solution method applied to it.
FEM

Highlight mesh elements (regions) with the finite element method (FEM) solution method applied to it.
VEP

Highlight mesh elements (regions) with the volume equivalence principle (VEP) solution method applied to it.
Windscreen solution elements

Highlight mesh elements (faces, wires) that are specified as windscreen solution elements (windscreen antenna elements).
Aperture

Highlight a slot or aperture in an infinite plane with the planar Green's function aperture applied to it.
Numerical Green's Function

Highlight mesh elements defined as the static part using the numerical Green's function.

Figure 1. On the left, a 3D view of a horn and a reflector with no highlighting applied. To the right, the reflector is highlighted in yellow to indicate that PO solution method is applied to the face.