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MvdM last won the day on April 8 2019

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About MvdM

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  1. Hi @Hans kalaran This problem will be resolved in the next Feko update (2019.3.1) that is scheduled to be released soon. Kind regards Madelé
  2. Hi @Ab28 The Gerber export for the attached model works in the latest version, CADFEKO 2019.3. The problem that you see was resolved in CADFEKO 2018.1. A workaround that you can use to get your export to work correctly in CADFEKO version 7, is to draw the geometry in such a way that there are edges that connect the outer edge of the face to the edge of the hole, for example like this: This creates individual faces where each face is completely filled in (with no holes). A model like this should export correctly, even in the much older version of CADFEKO. For comparison, you were exporting the faces with the holes encapsulated in a single face: Kind regards Madelé
  3. Hello @Ranjitha Ravishankar If you attach your model file (.cfx) others could take a look at the definition of the anisotropic material in your model. From the CEM validate output, it still looks like the anisotropic material definition is not valid.
  4. Hello @Ranjitha Ravishankar Feko only supports passive media, so you should review the anisotropic medium definition. Is the defined medium a passive medium? You can run CEM validate (Solve/Run tab) in CADFEKO to see which regions (and media definitions) trigger errors. If you need further help, please add your .cfx model and/or .out file. Also, what version of Feko are you using? Kind regards Madelé
  5. @mgmv7, which variable in the model lossy.cfx are you sweeping? Is "d" the distance variable? Note that the parameter sweep does not support sweeping variables that are used in result requests. If you are sweeping "d", it would be required to change the near field request not to depend on this variable.
  6. This error is given when model creation fails. Please make the same change to the model in the CADFEKO to see what is going wrong. For instance, if you change variable "d" to depend on lambda, applying the variable change would fail. The reason for the failure is that the near field request depends on this variable and integer values need to be entered for the number of field points. You could use "ceil(lambda)" for the variable or "ceil(d/5)" on the near field dialog to resolve this issue. Glad you found a way around the problem. I trust the explanation above helps to understand why it happened. I'm not sure if this is just due to the number of points. For d=1e4, with the near field request depending on this parameter, you have 10 million near field points.
  7. Hi @mgmv7 Could you please upload the cfx file again? There seems to be a file attached to your post, but it shows "Unavailable". What version of Feko are you using? Kind regards Madelé
  8. Hi @lostarmour Please see this post: Does that help? Kind regards Madelé
  9. MvdM

    Model Extents

    Hi @pmcardle When the model extents is set to the default value of 5E+02 (500), the entire geometry must fit inside a 1000x1000x1000 box (in the model unit) centred at the origin. For 50e2 (a setting of 5E+03), the geometry must fit inside a 10000x10000x10000 box (in the model unit) centred at the origin. Please also refer to the "Model Extents" section of the Feko User Guide where this is explained. Kind regards Madelé
  10. As far as I know there is a bug in Feko 2018.2 and 2018.2.1 (fixed in Feko 2019) that causes an error when using DGFM to solve SEP regions (I responded in the duplicate thread). I would also recommend you upgrade to the latest version of Feko 2019.
  11. Sorry, Mel. I had typed the response before you had locked the thread. The duplicate thread is: https://forum.altair.com/topic/36393-dgfm-errors-sep-feko-2018/
  12. Hello Eliz Unfortunately you are using a version that will not work to solve your antenna array containing SEP regions with the DGFM. It is strongly recommended to upgrade to the latest version of Feko - the current version is 2019.1.1. DGFM is supported for SEP regions in version 14.0.430 and later, excluding versions 2018.2 and 2018.2.1. The reason for version 2018.2 and its patch being excluded is a regression that got introduced in version 2018.2. It is fixed in Feko 2019. The CEM validate message is wrong (this is a known defect) and should be updated. Kind regards Madelé
  13. Hello @SUG Please see this comment: Kind regards Madelé
  14. The model only contains model mesh parts. It does not contain any geometry. Meshes cannot be exported to geometry formats (like Parasolid).
  15. In the attached model the simulation meshes and model meshes are the same, so it does not matter which option is chosen. I have done another visual inspection and could not find differences between the attached Gerber file and the CADFEKO model. Have you used a Gerber viewer to see if the exported file contains the layout that you expect?
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