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Get Started
The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
Waveguide Power Divider
The example considers the transmission and reflection coefficients of a waveguide power divider.
Creating the Model in CADFEKO
Create the model geometry using the CAD component, CADFEKO.
Changing the Waveguide to a Shell (Hollow) Part
Change the solid waveguide part to a shell (hollow) part with metal walls.

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Get Started
The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
- Creating a Rectangular Horn
  The example is intended for users with no or little experience with CADFEKO. It makes use of a completed rectangular horn model to familiarise yourself with model creation in CADFEKO and viewing the simulated results in POSTFEKO.
- Creating CADFEKO Models
  The example is intended for users with no or little experience with CADFEKO. This example is not an example intended for simulation, but rather to familiarise yourself with model creation in CADFEKO.
- GPS Patch Antenna
  The example considers a left-handed circular polarised GPS patch antenna on a finite substrate.
- GPS Patch on Quadcopter
  The example considers the antenna placement of a GPS patch antenna on a quadcopter.
- EMC Coupling
  The example considers the coupling between a typical monopole antenna and a loaded transmission line above a ground plane.
- Waveguide Power Divider
  The example considers the transmission and reflection coefficients of a waveguide power divider.
  - Example Overview
    Calculate the transmission and reflection coefficients of a waveguide power divider.
  - Topics Discussed in Example
    Before starting this example, check if the topics discussed in this example are relevant to the intended application and experience level.
  - Example Prerequisites
    Before starting this example, ensure that the system satisfies the minimum requirements.
  - Creating the Model in CADFEKO
    Create the model geometry using the CAD component, CADFEKO.
    - Launching CADFEKO (Windows)
      There are several options available to launch CADFEKO in Microsoft Windows.
    - Launching CADFEKO (Linux)
      There are several options available to launch CADFEKO in Linux.
    - Setting the Model Unit
      Set the model unit to millimeters.
    - Adding Variables
      Define variables to create a parametric model.
    - Creating the Power Dividing Pin
      Create the power dividing pin using a cylinder.
    - Creating the Waveguide Sections
      Create the waveguide sections using two cuboids.
    - Unioning the Geometry for Mesh Connectivity
      Union the geometry (Cuboid1 and Cuboid2) to create a single geometry part. A single geometry part will ensure mesh connectivity when the model is meshed.
    - Removing Redundant Faces
      Use the simplify tool to remove redundant faces.
    - Changing the Waveguide to a Shell (Hollow) Part
      Change the solid waveguide part to a shell (hollow) part with metal walls.
    - Unioning the Waveguide and Power Dividing Pin
      Create a single geometry part from the waveguide and power divider pin to ensure mesh connectivity when the model is meshed.
    - Ports, Sources and Loads in CADFEKO
      Voltage sources and discrete loads are applied to ports and not directly to the model geometry or mesh. A port must be defined before a source or load can be added.
    - Setting the Simulation Frequency
      Specify the frequency range of interest.
    - Adding a Near Field Request
      Add a near field request to calculate the fields on a surface through the centre of the waveguide.
    - Setting Local Mesh Sizes for Waveguide Port Faces
      Refine the mesh locally at the waveguide port faces. The faces for the waveguide ports require a finer mesh to represent the highest mode that should be taken into account. The higher order modes are typically evanescent modes.
    - Saving the Model
      Save the model to a CADFEKO.cfx file.
  - Launching the Solver
    Launch the Solver to calculate the results. No requests were added to this model since impedance and current information are calculated automatically for all voltage and current sources in the model.
  - Reviewing POSTFEKO and Launching OPTFEKO
    Open POSTFEKO from within CADFEKO.
  - Final Remarks
    This example showed the construction, configuration and solution of a waveguide power divider. The model consists of a hollow cuboidal sections with a cylinder (pin) in the centre. The near field and input reflection coefficient was calculated and displayed.
- Optimisation of Bent Dipole and Plate
  The example considers the optimisation of the gain of a bent dipole in front of a plate.
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.
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.

Changing the Waveguide to a Shell (Hollow) Part

Change the solid waveguide part to a shell (hollow) part with metal walls.

In the model tree, select Union1.
In the details tree, under Regions, select Region1.
From the right-click context menu, select Properties.

Figure 1. The right-click context menu options available for regions.
On the Modify Region dialog (Properties tab), set Medium to Free space.

Figure 2. The Modify Region dialog.
Click OK to modify the region properties and to close the dialog.