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Community March 2026 Roundup 📣
It's time for our March roundup! We've been busy behind the scenes and we're thrilled to share some significant updates. Get ready! 📣 Major Updates Altair's Support infrastructure migrated to the Siemens Support Center: As of Monday, March 9th, the Altair Support Portal has been shut down and your cases have been migrated…
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Can I simulate the band at 7 GHz in WinProp - workaround for FR1/FR2 validation error?
Hello, I am running coverage simulations in WinProp / ProMan for a master's thesis on multi-band cellular planning. My current scenario includes three bands working correctly: LTE B8 (950 MHz), LTE B1 (2160 MHz), and NR n77 (3525 MHz). I now want to add a fourth band at 7 GHz, corresponding to the IMT-2030 candidate range…
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FEKO SCRIPTING INTERFACE
I am trying to run scripts on feko scripting interface and nothing happens. Can someone kindly assist on how to go about it?
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Is there any way to simulate an infinitely periodic ground with a single antenna.
Description: I am trying to simulate a single antenna above an in-homogeneous soil. Currently I have an antenna placed above a checkerboard of solid blocks of soil, and I want to tile this out to infinity. When trying to implement infinite periodic boundary conditions, or expanding it as an array, the system always tiles…
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Verify Shunt Capacitor Sweep Setup in FEKO
I'm looking to plot S-Parameters for the purpose of extracting capacitance values throughout a frequency sweep. I am able to run the simulation, plot S-parameters and export the SnP file, but here are the issues: Either the capacitance is about twice what it should be, or this shunt capacitor electrically looks like a…
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Constant Errors Regarding Twisted Pair Wires
Hello, I am using a twisted pair wire with the following values: Metric Value Core Radius 0.000335 Insulation Layer Thickness 0.0009 Twisted Pair Radius 0.0025 Twisted Pair Length 0.003 This shows no errors, but when I try to run Feko Solver I get: ERROR 53993: Twisted pair: expecting a twist pitch length that would result…
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Cannot Add Current Source to Model
Hello. I am trying to model the coupling between two wires running parallel on Feko v2025.1. I have been following the EMI/EMC learning series using Altair Feko Example 1-3 YouTube series, as well as EMI/EMC learning series using Altair Feko Example 4 Shielded Cable Crosstalk, as best I can. But for most of the model's…
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How much storage space do I need to install Feko? I'm having trouble.
Hello. I'm trying to install Feko but it says "not enough room for a complete installation." I've freed 5GB but it's still not enough. Would appreciate advice and guidance on this. How much storage space do I need to install Feko? (2026)
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Error LMX_NO_NETWORK_HOST
Hello, I have installed FEKO 2024.1 student version. I followed the steps and provided the activation key in Atlair license utility. I have also checked through Altair managed licenses I can verify that the HostID is also correct. But when I open CADFEKO, it doesn't work, citing license errors (as shown in the attached…
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in this multiport (2 port) antenna how to fix the excitation of port 2? FEKO V2023.1
Here, in port 2( near the t shape slot at the bottom) I am getting about 0dB reflection, Can you kindly check this model and fix the excitation of feed 2?
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Relaunch simulation with some additional frequency points
Hello, I have a simulation which I run with let say 5 frequency points. I want to rerun the simulation with 10 frequency points, but without having FEKO to resimulate the 5 frequencies I've already simulated. Is there any way to do so ? I've tried simply simulating, adding frequency to the frequency list ("List of discrete…
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What's the best way to simulate the SE of an enclosure ?
I have an enclosure and i would like to simulate the SE of it, i have a plane wave excitation and a rectangular aperture on one of the face of the enclosure. Should-i use MOM, SEP or FEM ? Do i need to create a dieletric Air media to fill into the box or just use Free space? what's the best way to simulate it and have…
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FEKO - Generating Az-El Output
Dear Support, I am currently producing the results in spherical format. Is it possible to generate the output in azimuth-elevation (az-el) format as well? In current workflow the elevation and azimuth angles are always reported as positive values in the some range. I would like to know is it possible to obtain outputs…
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FEKO - Request for Guidance on Extracting Phase Values
Dear Support, When we run a POSTFEKO analysis we can view several electric-field quantities and gain values. These results are readily available in the .ffe file. However, I would also like to retrieve the phase information, in particular the Phase (Elevation) component. Could you please advise how I can extract and use…
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GPU and FEKO
Hello, I do not understand well to what extent FEKO supports the GPU with MoM (SEP). I can see on the official website it is supported, but trying to run FEKO with GPU warn me that parallel computation is not supported with GPU. So I've set the number of process to one, but now it is awfully slow. I see in the log that GPU…
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license actevtion
I am using the student version of Altair FEKO. I previously activated my license on my old laptop. I recently switched to a new laptop, and when I try to activate the software using the same license key, I receive a message saying that the key has already been used. Unfortunately, I no longer have access to my old laptop,…
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Compute current through a cross section of my metallic structure
Hello, I am trying to obtain the total current that goes through a plane in my structure, as shown below : I've found the .out and .os files where currents are saved, but I have them sorted by label (1, 2, 3, 4, 5, …), and not by geometry, even if I see that the coordinates are written. 1. What is the "good" method to…
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Altair Student Edition license access
Hello, I have a problem with my Altair FEKO Student Edition license. Unfortunately, my previous PC has broken and I no longer have access to it. Because of this, I was not able to deactivate the license before the system became unusable. Now I cannot activate the license on my new machine. Could you please help me reset or…
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SimLab - Cosite Interference Solution Not Working / Interface Not Matching Tutorial?
I'm using the student version of Altair SimLab and I'm trying to create a co-site interference simulation. So far I've followed along with the official Antenna Placement and Cosite Interference tutorials: Antenna Placement Co-site Interference The problem I have is that I'm stuck on creating a Cosite Interference solution.…
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How can I perform a specific type of integration in POSTFEKO
Hello, My problem statement is that I have to input an f(t) at one end of the waveguide and obtain an integrated poynting power density that looks like where E(w,z) = F(w)* J(z)*g(|r-r'|); and g(|r-r'|) is the green's function, J(z) is the aperture current and F(w) is the frequency spectrum of f(t). Can this be possible in…
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How to check active reflection coefficient for all ports individually for the array antenna?
Hi, I have a four-port array antenna, where I used the active port excitation method using the "Sparameter tab", now my confusion is what are the actual active reflection coefficients in POSTFEKO? Does it refer to voltage source 1,2,3,4? Or, the active reflection coefficient results should be found under the S parameter…
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Issue generating .mct (Class Definitions) after GeoTIFF conversion in WallMan - Altair Feko 2026
I am seeking assistance regarding a bottleneck in my WinProp workflow. When setting up a new project in ProMan and selecting Rural and Suburban Scenarios (Pixel databases), the interface requires three mandatory files: Topography, Clutter (Pixel database), and Class Definitions (.mct). While I can successfully convert the…
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FEKO v2026: Issue with Assigning Properties to an Imported Structure
I have imported a 3D structure from GMSH to FEKO to find its RCS(imported mesh, not geometry). In FEKO, only the surface of the structure is meshed. as a result, there is no 'region' option in construction tree for me to assign a permittivity to the whole structure. Instead, I chose the imported mesh from the tree, in the…
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Using angular variables in postfeko
Is it possible to use angular variables Theta and Phi in postfeko and plot, as an exhample, sin(Theta) or cos(Theta)?
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Error activiating License: This license was already activated using different HostIDs
actually fixed, never mind