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Mesh Model Import issue
I trying to import a Mesh model of an Fighter Aircraft in Feko. I have generated a mesh on it in hypermesh 2025 version. And exported the file as a .fhm file. but ,while importing the fhm file in feko it was throwing me the below shown error.Can Anybody please help getting over this issue?
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FEKO Problem with Magnetic symmetry and plane wave
Hello, I am building an antenna, symmetric according to (XZ) plane and excited by a plane wave, polarized with E field along (Y). The software complains about the symmetry in regard to the polarization. Here are the error message from the log file, the plane wave setting and the symmetry settings. I suspect the mesh has an…
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Mutual Coupling between two SPH sources
1] I want to check the mutual coupling between two SPH sources separated by distance of 900mm. For that i have two SPH sources oriented in Broadside direction of Patch antenna array & 45 degree in XY plane.(Note : Both the sources are oriented in Azimuth plane). if we can check the mutual coupling between these equivalent…
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How to check the E-field value for calculating power handling capability of my antenna?[V 2023.1]
Hello, I want to check the power handling capability of my conformal array antenna; for that, I created the near-field surface from the top of the patches to the cylindrical ground plane. I want to check the electric field value at the top of the patch surface, the dielectric layer, and the ground plane, because these…
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Issue when trying to run CAD FEKO
I'm trying to run CADFEKO v2025.1 and I am seeing a license error with the following message: "An error occurred while checking out a license. Altair License Manager: License error Feature(s): GlobalZoneAM, HyperWorks, HWFEKOGUI Error Code: 9 Error Description: Feature not found" What could be causing this issue? I was…
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Problem with student license FEKO 2025.1.1
Hello, I have a problem with my student license of FEKO. Here is my error : "An error occurred while checking out a license. Altair License Manager: License error Feature(s): GlobalZoneEU, HyperWorks, HWFEKOGUI Error Code: 9 Error Description: Feature not found License Path:…
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Is it possible to deactivate a license for renewal without access to the previous device?
I recently had my hard drive corrupt and when I went to open up Feko again to use my student license, it said "Error activating license: This license was already activated using different HostIDs." However, I don't have access to the other one so I can't deactivate it. Is there an easy way to get around that?
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Meta-surface S-parameters computation
Generally how can one compute S-parameters for a meta-cell design? It is understood that TR coefficients can be requested for a design like that shown in Fig. 1. However, the goal is to compute the parameters for a cell with a specified thickness, as illustrated in Fig. 2. For this second case (Fig. 2), the calculation of…
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I keep coming across this error while working on a project
cadfeko 4963 The application has terminated in an unexpected way. Please contact support with a description of what you were doing together with the following information: 00007FFDAA44F37C (ui_values): (filename not available): altair::feko::values::AbstractValue::isIgnored 00007FFDAA44F38D (ui_values): (filename not…
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Why does PO-LE appear to get less accurate as iterations increase?
A monopole antenna on the helicopter should have about 5-6 dBi of farfield gain. When using PO-LE (coupled with MoM) and limiting it to 1 iteration, it shows about 5-6 dBi of gain. However, as the iterations increase, so does the gain, until ulimited iterations gives >23 dBi of gain! What am I doing wrong? Does PO-LE only…
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Resilient Communications Beyond Line of Sight
In this white paper, a case study is presented in which a small military unit that has been deployed close to enemy forces needs to communicate beyond line of sight to call in reinforcements. To enhance resilience against jamming, the forward unit has access not only to Low Earth Orbit (LEO) satellites but also to a…
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How can I shift the near field here from the center to all patch area? FEKO V. 2023.1
Hello all I am attcahing here the model, which has already near field area under the patch surface to the ground like a cube, I want to calculate the E field of that area under every patch in this array antenna, but I can not move the near field to each patch area from the center of the cylinder, could anybody kindly show…
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Is there an efficient way to simulate a 1.5m aluminum (200um rms) reflector at sub-THz frequencies?
Description: Hi there, the issue I'm having is that I've been using the LE-PO solver, but it doesn't work for lossy materials such as aluminum surfaces. I'm specifically trying to obtain a model that accounts for the surface material and surface roughness (200um for example) seen when using a horn-fed dish (single…
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How to apply a coating of CFRP to an antenna model in feko?
Hi We want to explore the effect of CFRP coating to our antenna. Since CFRP is an anisotropic material, I am not sure how to model it in feko and apply a thin coating to the antenna faces. If I model it as a layered anisotropic dielectric with a single layer, it doesn't appear in the drop-down menu in the 'coating' option…
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Upcoming Altair Community Events - Join Us!
Hi Everyone, We have some exciting sessions lined up for August and the rest of the year. New sessions are also added to the exciting Power Conversion and Magnetic Chat series. Register Now! Summary of our Upcoming Events: MotionView/MotionSolve 2025.1 for Vehicle Dynamics [ August 27] - Learn about the latest advancements…
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Error while trying to simulate slot antenna on infinte ground plane with CMA method
Hello, I am trying to simulate slot antenna in an infinite ground plane through characteristic mode analysis in FeKO 2025. The design contains 4 slots on infinite ground plane under the condition of multilayer planar substrate. I set the slot with the "Planar Grenn's function aperture" solution method. In the user guide,…
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Unable to add .ffe file as a directional antenna pattern in Proman
Description: Dear community members, I am trying to add a custom antenna pattern in the .ffe format (zip-file attached here) in Proman file> Site new > Transmitter type > Antenna > Site 1 Antenna 1 > Cell > Directional/sectoral antenna > attach .ffe file, and this .ffe file was already given in one of the examples of Feko…
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Feko: How to create an s-parameter simulation of a model with non-radiating networks?
Hello, I have a simulation of several antennas with complicated matching networks implemented as Network schematics. How do I find the S-parameter coupling between the actual antennas? The only way i can see is to create a task for each possible source and manually compute the coupling to each load. And then assemble a…
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In feko how do I find the power dissipated in a non-radiating network
Hello, I am currently simulating several co-located antennas. Most of the antennas have matching networks implemented as "general network" in the network schematic layer. how can I plot the power dissipated in the "general network" in postfeko? I see options to plot "power" and "power in" for each port of the GN. But there…
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Extract realized gain
Is it possible to export realized gain of an antenna in the far-field file .ffe?
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Feko error 46197
Hello I'm working on EMC research related to electric vehicles. We have a model in feko, that I unfortunately can't share due to an NDA. We're essentially simulating S-parameters between a wire inside the car body and an external antenna. The model is large in size (approximately 5x5x2.5m simulation box), but at relatively…
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Machine file "nodes" not found in parameter sweep output directory
Description: The above error appears when I try to run a parameter sweep-it seems to create the desired models as necessary, but whether I run on parallel or not this error will appear. I did receive a windows update recently so it may have to do with that- also noting I was running parameter sweeps just fine until…
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Feko Student License on Remote Server
Hello, we installed Feko on a windows remote server. With a student license. But we get this error: Can you help us? Kind regards,
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How to export this cadfeko file as STEP file with proper material layersand holes?[feko 2023.1 v]
Hi, I want to export this attached antenna file as a STEP file, but the problem is that Every time I am exporting this geometry as STEP format, it is taking the PEC layers in the whole structure. In the exported STEP file, the "holes" for the wire probe and the substrate material are missing; the whole structure is taking…
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In the postfeko lua api, how do I SetFixedAxisValue with nearfield arbitrary point?
i have a calculation that uses "nearfield arbitrary points" to specify the calculated nearfield. I want to set the fixed axis value for a cartesian plot to all of those arbitrary points. for one point I assumed I can use: pointlist= trace:GetFixedAxisAvailableValues("Near field arbitrary Points") point= pointlist[i]…
