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What is the best way to implement a frequency dependent voltage source in feko?
Hi, I am trying to simulate a frequency dependent voltage source in feko. Specifically I am simulating an antenna that has been calibrated according to iso-11451-2. Which means I have a csv file of frequency points with associated voltage values that should describe the correct excitation for each point. This file was…
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New cable modeling features in Feko - Part 1
Abstract Altair Feko supports extensive cable modeling features, and this article will describe the latest features in more detail. The main cable feature is the combined MoM/MTL schematic link functionality. This allows accurate modelling of non-ideal (pigtail) shield connections to a device and radiation from common mode…
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Mesh error for rectangular waveguide
I am trying to simulate a rectangular waveguide (WR-34) from 18-40GHz and I receive the following error The model is attached in the file.
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White Paper Aircraft SATCOM
This white paper shows how Altair® Feko® and Altair® WRAP™ are used to design antennas that achieve a required communication data rate between a geo-stationary satellite and an aircraft.
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Characteristic mode analysis of a patch antenna with substrate
Dear all, I am trying to learn the correct way to simulate Characteristic mode analysis. As many works in literature use FEKO, I am also using it to replicate the results of one of the papers (YANG AND ADAMS: COMPUTING AND VISUALIZING THE INPUT PARAMETERS OF ARBITRARY PLANAR ANTENNAS). Even though they have used their own…
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Modelling of the ground as a PEC plane.
Hello everyone, As you know, Feko allows to consider a perfect ground plane as a PEC : cf. https://help.altair.com/feko/topics/feko/getting_started_guide/GS5_emc_coupling/emc_coupling_infinite_plane_feko_t-example5.htm Would it be possible to know which electromagnetic technique is used to model this ground plane ? Thanks…
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RUNFEKO: Abort(1614735) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init_thread
Description: I am using Feko 2025 with a student license, and I am encountering an error when I enable parallel processing when running RUNFEKO. The complete log with debug logging enabled is attached below. The error I am encountering appears related to this community post, where my error corresponding to the first side…
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Assistance Needed with Aircraft C130 Model Union Process
Hi Experts, I have an aircraft C-130 model (attached image). The model is failing during the union process. Could anyone suggest how to resolve this issue so that it can proceed successfully? Thank you in advance for your help!
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Near-Field Planar Characterization Simulation of a Rectangular Horn Antenna with a probe - FEKO
Hello everyone, I am currently facing difficulties while performing a simulation of a typical near-field planar characterization. Particularly, I am considering the case of a rectangular horn antenna using an Open-Head WG as the probe. Here's a detailed description of my setup and the issues I'm encountering: I have…
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How to speed up upload and even delete components of large models (STEP Files sized 100MBytes).
CADFEKO is slow to upload large models (STEP Files of 100 MB) and to even delete the models. How can I speed this up? More memory, disabling auto-checking, etc.
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Overview of Methods to Predict Radio & Radar Coverage and Interference using WinProp & WRAP - Part 2
Simulating Radio & Radar Coverage and Evaluating Interference This second part shows further cases how the radio & radar coverage can be predicted and the interference can be evaluated using Altair Feko with WinProp and WRAP technologies. Case 4: 6G Reconfigurable Intelligent Surfaces and Non-Terrestrial Networks Including…
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Overview of Methods to Predict Radio & Radar Coverage and Interference using WinProp & WRAP - Part 1
Simulating Radio & Radar Coverage and Evaluating Interference The future information society will rely on mobile communications using latest 5G, 6G and WiFi technologies to provide a wide variety of applications for which significantly higher mobile data throughputs shall be supported. Key for development and for…
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FEKO - Point source expression
Hello everyone, I would need to know how FEKO defines the field expression of a point source. For example, if I consider an electric source at the origin oriented according to z, I expect the following expression: E_theta=j*k*Z*I*dl*sin(theta)/(4*pi) By selecting I*dl=1 in FEKO I get a field amplitude different from the…
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Feko v2024 --Error while executing the model.
Hi Everyone, I am facing this issue for days. Can you help me to resolve this issue?
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CADFEKO openGL not fuonded
Hi, I installed FEKO for the first time on my pc, that is not too old with ryzen 9 and 6700s, but when I first tried to start CADFEKO the error in the image appeared. I have the latest driver on my Pc and the others program in the suit work like a champ. Someone else have had my same problem?
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mesh error ...beginner help please
Errors ⬤ Union1 could not mesh due to the following reason: Src\SimLab\SimLabSurfaceMeshGenerator.cpp (202): Assertion failed: Unable to create C:/Users/divya/AppData/Local/Temp/feko/temp_SimLab_de027c67-e0ed-4efc-9c64-6d0720bf2bd3 what do it do ?? can I change the path? to create the folder or is there some other way?
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In Postfeko what is the most efficient way to plot HPBW over frequency?
Hello, I am trying to plot the HPBW of an Antenna in Postfeko as a function of the frequency. I can show the HPBW and similar parameters in graphs, but I can't access the values for further processing in postfeko or lua. I would like to know if there is a way to access these values. My current goal is to plot the HPBW as a…
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How to change the number of significant digits in the exported near fields file in Altair FEKO.
Hello everyone. I am looking for your help. I've tried absolutely everything and can't find any information. When exporting near fields (*.efe and *.hfe) the number of digits after the decimal point is always 8, I need to increase it to 16. In the settings of the solver I specified to save data with double arithmetic…
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metallic edge port Error for GO -Solver
I am getting the following error during simulation. How to solve this error in my modal "The following message from the master process (MYID= 0): ERROR 21: The metallic edge for the edge port does not exist" Regards Sunanda
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Facated UTD multiple reflection
I am computing the near-field scattering of a reflector illuminated by a Hertzian dipole using the Faceted Uniform Theory of Diffraction. The accuracy of the scattered fields is sensitive to the number of mesh triangles used to represent the reflector. In the attached FEKO models, one uses the default mesh, while the other…
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Help deactivating FEKO license from old laptop
My hard drive recently crashed and I was forced to wipe it and reinstall Windows. I was not aware that I had to deactivate my license beforehand and now have no way of doing so. I've reinstalled FEKO, but cant use it. Help in this regard would be greatly appreciated.
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Error 16946 Pathsweep1 unable to perfrom sweep
In the attched model I am trying to sweep a ellipse along a path defined by 'Union1'. I get this error message. I get the same error message in FEKO 19 and 2022. Could you please help to resolve this issue.
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Altair Feko: Adding newFASANT to a Feko 2025 installation
Files required to run newFASANT 2025 have been removed from the standard Feko 2025 installation. Should you want to expand your Feko 2025 installation to support creating, opening and running newFASANT, please follow these steps: Install Feko 2025 on your machine following the standard installation process. Note the…
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Feko: Is there a way to merge results of two simulations with overlapping frequencies?
Hello, my specific problem is that I have a fairly slow simulation for which I have computed results, and now I wish to combine additional results at different frequency samples with those. For example my original simulation had samples at 1-100MHz at 1MHz sample distance, and the second one had samples from 40-50MHz at…
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help to deactivate of student licence so it can be transferred to different computer
Hello, my computer motherboard no longer works and I can't deactivate my student license. I've moved the hard drive to a new computer and would like some help in deactivating my license so I can reactivate it on the new computer. Can someone please help?