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How to change the number of significant digits in the exported near fields file in Altair FEKO.
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 precision.
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PollexのPCB-level EMI DFEについて
こんにちは皆さん。 松川と申します。 題記の件2024/12/04にFekoに関するセミナーを受講しました。 その際資料のなかで以下が示されました。 使用によればGNDのスリットについてその際が示されています。 通常このようなスリットはアナログGNDとデジタルGNDを分割し その影響を受けないようにすることに用いられつと認識しています。 種々の情報からPollexではクロック信号のようなデジタル信号以外 電流分布は解析できず、Fekoへのデータエクスポートもできないと 理解しています。 上記の資料は正しいのでしょうか？認識が違えばご教授頂けますと 助かります。
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PCB-level EMI checking with PollEx DFE
I was told by a Japanese distributor that Pollex cannot calculate the PCB current of analog signals. Looking at the top right of Page42, the difference in radiation noise due to the presence or absence of a GND slit is shown. In the PCB on the top left of Page42, it appears that the analog GND and digital GND are probably…
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could anybody kindly help me to run my model? getting error 2331 (FEKO 2023.1)
Hello I am getting an error message, could anybody kindly help me to run my model? I am attaching here my design model, it is created in FEKO 2023.1 Thanks in advance!
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FEKO - Error for active material using Debye model
I´m simulating the effects in the field into the distilled water and using Debye or Cole-Cole model for relaxation fenómena. The parameters provided are Relative static permittivity: 5 Relative high Freq Permittivity: 80 Relaxation Freq: 20e9 CADFEKO give me the next message ERROR 49031: Active materials currently are not…
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Which option in Feko 2023.1 Solver will give the result Z11 (input impedance) ?
Hi, I want to check the input impedance(Z11) of my conformal antenna, how can I get the result Z11? Which options should I select in FEKO 2023.1?
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Coplanar Waveguide - How to set up ports?
Hello community, I am currently working on a simulation involving a coplanar waveguide (CPW) in FEKO. The structure consists of a signal trace flanked by two ground planes. I’ve set up the geometry and boundary conditions, but I’m unsure if I’ve defined the ports correctly. There was an example online that I followed, but…
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Feko Simulation Models for Anten’it Prototype Antennas
Antennas are fundamental components of wireless communication systems, enabling the transmission and reception of electromagnetic waves. The design and fabrication of antennas are critical for achieving optimal performance in terms of radiation pattern, gain, bandwidth, efficiency, etc. Simulation is an important tool to…
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New Adaptive Mesh Refinement (AMR) in CADFEKO
New Adaptive Mesh Refinement (AMR) in CADFEKO Automatic mesh adaptation to find trade-off between model size and accuracy Feko simulations are using a meshed representation to describe geometry of a model. The simulation method is needing the mesh elements to define local basis functions for describing physical quantities…
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How to simulate for a series of antenna.azimuth angles in api
Hello, I was trying to simulate with the api of WinPro. When it comes to define the antenna, I wonder if there is a way to input a vector so that multiple angles can be simulated at once. I noticed the variable WinPropAntenna.Azimuth is defined as a double and there's no exmple of it being a vector in the handbook. Thanks…
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ERROR 31061: ADAPTFEKO run will terminate now due to error in RUNFEKO
I am trying to generate a 15x15 rectangular patch array. I have started by using the component library and specifying a frequency for a single element. This single element runs. when I create a 4 x 4 array and change the properties of the substrate, change the Cuboid1 width (W) so that elements do not overlap, and run the…
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FEKO-Transition matrix (T-matrix) of a metalic cylinder scatterer
How can we compute Transition matrix (T-matrix) of a metalic cylinder scatterer in FEKO ? Are there any tutorial available for Transition matrix computation for an arbitrary scatterer ?
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FEKO-Generalized scattering matrix
How can we compute the generalized scattering matrix out of the spherical mode expansion (exported to the *.sph file) following the formulations in the book J. E. Hansen: Spherical Near-Field Antenna Measurements, 1988.
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unable to obtain the near field data after applying time signal.
I have applied a time signal(Gaussian pulse) on an aperture and I am to obtain the near field behavior. I am unsure if there is an error with the sampling or anything else. I am attaching my postfeko file here.
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Error: transmission line requires valid port
I am new here. i tried to simulate a LPDA Antenna. there is a step where I need to create a transmission line. But I alwys get the same error.: transmission line requires a valid port. I dont know how to set the port. It has been tree days that i am trying with every tools that I have but nothing.
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Scattering in RL-GO
As I was using the RL-GO solver in a radar application, I noticed that it casts rays from the source that do not end at the "receiver" (the near field sampler). Instead, the end of a ray is denoted with an "S," which the documentation describes as an "observation point." Here is a picture of one ray: My source is the…
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Unable to mesh port 'WirePort1'. Wires may not be embedded in PEC regions.
I am practicing through Feko_Example_Guide 2023.1. This is the error I am facing : Unable to mesh port 'WirePort1'. Wires may not be embedded in PEC regions. It is appears as I practice example A.8.2 Pin-Fed, FDTD Model, page 59. I have tried several ways to solve but I am not able. Kindly help me out. Find attached…
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parametric sweep of feed position
Dear Altruist, I hope my message will find you well. Could you please let me know how can I do parametric sweep of my feed position and extract the result in CADFEKO v2022.3.For the time being I am using simple wire feed with 50 ohm voltage source. It would be better if anyone could give me a link of video tutorial for…
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Recreating far field pattern from datasheets
Hello everyone, I was wondering if it is somehow possible to recreate the far field of a specific patch Antenna using its technical datasheet. I managed to recreate the 3D radiation pattern using AMAN by recreating the 2D horizontal and vertical radiation patterns from the datasheet and then converting both to a 3D…
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Yaki Design
Hello everyone, I am designing a yagi antenna with 3 magnets with S11<-10dB requirement at 1700-1900MHz but I can only meet the requirement at 1700MHz and not at 1900Mhz, can you help me? Can you help me how to adjust?Thanks.
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Request for Assistance with Feko Simulation Errors: ERROR 33052 & ERROR 39518
I am encountering issues while running simulations for dipole antennas at 100 MHz using Feko, and I would appreciate your assistance in resolving them. 1. Basic Cylinder Dipole Antenna The 100 MHz calculation for this antenna is performed using MLFMM (Multilevel Fast Multipole Method) to reduce computation time. However,…
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Inquiry Regarding Impedance Calculation for Dipole Antenna Model
I am experiencing difficulties calculating the impedance across frequencies for a 50 cm dipole antenna model, which is covered with pure water and PVC. Despite attempting to modify the radius and mesh size of the model, I have been unable to resolve the issue. Additionally, the following error messages appear: The…
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Ferrite Ring Coil macro
Overview This macro will create a ring coil with ferrite core based on user input. Once the ring coil has been created, only a wire port and a voltage source need to be created. A near field request already exists. VEP is used for the ferrite core. A video to demonstrate the workflow is attached. Usage/Installation…
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Can the beams of an antenna at a fixed position be modified during time variant simulation in Winprop?
Hi, I'm trying to do a time variant simulation in WinProp but I only found an example of moving the antenna through a trajactory. I think it's more practical that the antanna site is at a fixed position while the pattern is changing, or rotating. I wonder if there is a method to do so in Proman? Or actually Aman? I also…
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FEKO 2024.1 Student Bundle License Error
Hello everyone, I have recently uninstalled Feko Student Bundle 2023.1 and installed 2024.1 version. When I try to run, for example, CADFEKO, I am getting a License Error, see screenshot below. I deactivated and reactivated the student license but it didn't work. When I looked into the PATHs, I noted that the .lic was…