Defining Symmetry
Exploit model symmetry to reduce computational costs.
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The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
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.
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.
The example considers the reflection coefficient and impedance of a microstrip patch antenna on a substrate modelled on an infinite substrate and then on a finite substrate.
Calculate the input impedance of a microstrip patch antenna close to 2.8 GHz. The substrate is considered as an infinite planar multilayer substrate as it is more resource efficient. The substrate is then modelled as a finite substrate to make it a more realistic model.
Before starting this example, check if the topics discussed in this example are relevant to the intended application and experience level.
Before starting this example, ensure that the system satisfies the minimum requirements.
Calculate the input impedance of a microstrip patch antenna on an infinite planar multilayer substrate.
Create the model geometry using the CAD component, CADFEKO.
Set the model unit to millimeters.
Define variables to create a parametric model.
Create a new dielectric medium with the substrate parameters.
Define the infinite ground plane and substrate.
Create the feed pin using a single line element.
Union the patch and pin to create a single part and to ensure a connected mesh.
Define a wire port on the feed pin. A voltage source will be added to this port.
Add a voltage source to the port of the pin.
Specify the frequency range of interest. For this example continuous frequency sampling is used where Feko automatically determines the frequency sampling for optimal interpolation.
Exploit model symmetry to reduce computational costs.
Create the mesh with the correct settings.
Save the new model to file.
Check the model for any errors before running the Solver to ensure the model is electromagnetically validated.
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.
Launch POSTFEKO from inside CADFEKO.
Calculate the input impedance of a microstrip patch antenna on a finite substrate. Modify the previous model by removing the infinite planar multilayer substrate and creating a finite substrate.
This example showed the construction, configuration and solution of a microstrip patch antenna. The model was constructed from an infinite substrate and ground plane in the former case, and a finite substrate in the latter case.
The example considers the coupling between a typical monopole antenna and a loaded transmission line above a ground plane.
The example considers the transmission and reflection coefficients of a waveguide power divider.
The example considers the optimisation of the gain of a bent dipole in front of a plate.
The Feko Example Guide contains a collection of examples that teaches you Feko concepts and essentials.
Feko is a comprehensive electromagnetic solver with multiple solution methods that is used for electromagnetic field analyses involving 3D objects of arbitrary shapes.
CADFEKO is used to create and mesh the geometry or model mesh, specify the solution settings and calculation requests in a graphical environment.
POSTFEKO, the Feko post processor, is used to display the model (configuration and mesh), results on graphs and 3D views.
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.
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.
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.
The Feko utilities consist of PREFEKO, OPTFEKO, ADAPTFEKO, the Launcher utility, Updater and the crash reporter.
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.
A large collection of application macros are available for CADFEKO and POSTFEKO.
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.
Reference information is provided in the appendix.
The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
The example considers the reflection coefficient and impedance of a microstrip patch antenna on a substrate modelled on an infinite substrate and then on a finite substrate.
Calculate the input impedance of a microstrip patch antenna on an infinite planar multilayer substrate.
Create the model geometry using the CAD component, CADFEKO.
Exploit model symmetry to reduce computational costs.
Exploit model symmetry to reduce computational costs.
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