Feko is a comprehensive electromagnetic solver with multiple solution methods that is used for electromagnetic field analyses
involving 3D objects of arbitrary shapes.
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.
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.
This POSTFEKOapplication macro can be used to plot all the standard parameters that are available after a characteristic mode analysis simulation
was performed.
This application macro is used for calculating mean effective gain (MEG) and envelope correlation coefficient (ECC) for a MIMO antenna configuration.
The MEG ratio can also be plotted.
The Multiport post-processingapplication macro allows you to calculate results for changes in the port loading without rerunning the Solver. Results that are supported are far fields, near fields, currents and specific port parameters, for example,
the voltage, current and S-parameters of each port.
The Multiport post-processingapplication macro calculates the port reflections and field values for changes in port loading, without rerunning the Solver. Through scripting in POSTFEKO, loads can be modified as a post-processing step.
The Multiport post-processingapplication macro can be configured to use a Lua settings file to define the loading and excitation for each port. This simplifies the procedure for frequent calculations
or large multiport setups with many ports.
The Multiport application macro can be called via the command line through POSTFEKO. Use the --configure-script argument to pass configuration information to the multiport post-processing script.
The file format and data structure for the output files (.xml and .mat) are described. These files are generated for storing the scaling coefficients for a multiport calculation.
Example 2 shows how to use stored far field and near field data, in a POSTFEKO session with a multiport S-parameterTouchstone (.snp) file in the Multiport post-processing application macro.
Use the Multiport post-processingapplication macro in POSTFEKO to calculate the port reflections and field data for a model (plate4prt.fek) with different load configurations.
The characteristic mode synthesis and design application macro is a post-processing application macro that can be used to calculate a weighted sum for the currents, near fields, and far fields requests for specific
characteristic modes of interest. The application macro uses a modified version of the modal weighting coefficient (MWC) to use the radiating phase when synthesising
the results with the macro.
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.
The Multiport post-processingapplication macro allows you to calculate results for changes in the port loading without rerunning the Solver. Results that are supported are far fields, near fields, currents and specific port parameters, for example,
the voltage, current and S-parameters of each port.
Run Generate multiport configurationsapplication macro in CADFEKO.
The Modify CADFEKO model dialog is displayed.
Click Continue to create the multiport
configurations.
A standard configuration is created for each port. In each
configuration, a single port is excited with the reference impedance from the
assigned load. The requests from standard configuration
config are transferred to each configuration to
calculate the fields for each excitation.