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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 


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  1. Wire segment radius for a wire port in FEKO

    Hi JIF, I have a question regarding coaxial cable again. I modeled a 20 cm coaxial cable with waveguide ports. But I would like to assign the characteristics to the cable like attenuation, velocity of propagation, Impedance and also shielding characteristics. But with waveguide port, I cannot assign these properties. Could you please say how the real properties of a coaxial cable can be assigned in feko. Thanks, Regards, Sra
  2. Distorted mesh elements in FEKO

    Hello JIF and Andries, Thanks a lot for your valuable suggestions. It really helped me. Thanks, Sra
  3. Distorted mesh elements in FEKO

    Hello JIF, It is my CAD model, not an imported mesh. Actually FEKO did not complain about distorted elements, but I get a warning: the results are not converged. I am guessing distorted elements is the problem for convergence. I am using MOM . Even though my model is small enough, FEKO is executing (simulating) the model for long hours. So I was guessing distorted elements is the problem I am using fine mesh which is required. As I change the mesh to standard or coarse the results are not reliable. I couldn't attach the model here due to some confidential issues. Am sorry for that Could you please mention the reason for convergence problem and how can i solve the distorted elements problem. Thanks
  4. Distorted mesh elements in FEKO

    Hello, Could anyone please explain step by step process of removing distorted elements in FEKO. It was explained in the FEKO user manual but it is not clear for me. I have an antenna model and when I simulated, I used to get a warning saying results are not converged. I found the problem that there are lot of distorted mesh elements. So kindly request you to explain step by step process of solving this issue. Regards, Sravan
  5. Wire segment radius for a wire port in FEKO

    Hi JIF, I appreciate for your help and thanks a lot for replying. Regards, Sravan
  6. Batch Simulation in feko

    Thanks Andries. I will try to create a Job scheduler and will update you the process. Regards, Sravan
  7. Batch Simulation in feko

    Hi Andries, Thanks for the answer. But I am not looking for optimization of a parameter. Actually what I mean is, For example, I have 3 different antenna models named '1',' 2', '3',which are different from each other. I would like to simulate an antenna model named as '1', Once this model '1' has completed the simulation, I would like to have feko to take antenna model '2' and then start simulation automatically. Once model '2' is finished then Feko needs to simulate model '3' automatically. So that I need not observe the simulation of every model and again start the simulation for other model. I would like feko to have an application where a script can be written saying that once the model '1' is finished in executing then it need to take model '2' and start simulation, which should be automatic. This is what I am looking for. Regards, Sravan
  8. Batch Simulation in feko

    Hello, Could anyone please answer whether there is an option in FEKO for performing batch simulations. In case if such an option is available in FEKO, can anyone guide me.
  9. Wire segment radius for a wire port in FEKO

    Hello Jif, I modeled a coaxial cable in FEKO. Could you please verify the model and correct me for any further changes Thanks
  10. Wire segment radius for a wire port in FEKO

    Hello JIF, Thanks for your reply. I got the answer now. I am able to define a radius but I was curoius to know the influence of the wire radius on the antenna performance. So I would like to know how the radius is calculated. But as of now I got my answer. Thanks for your suggestions again.
  11. Wire segment radius for a wire port in FEKO

    Hello JIF, Thanks for your reply. Regarding wire segment radius: What I mean is For example, I am modeling a dipole antenna. I created a line (which is of 0.5 mm) in between the dipole. Then I have applied a wireport to the line. When I mesh my model, I have a pop up of create mesh window. In this window I assigned a fine mesh and you can also see Wire segment radius. So now my question is how is this wire segment radius calculated and on which factors does the radius depend on. I hope you got my question now.
  12. Hello, Could anyone please help me in determining the wire segment radius for a wireport in FEKO? Do anyone already had a .cfx file of a modeled coaxial cable of some centimeters? If so could you please attach the model for me. Regards, Sravan
  13. Hello, Could any one please say how to determine the wire segment radius of a wire port in FEKO. Do you have any formula? Regards, Sravan
  14. Hello, I would like to model a 20 cm coaxial cable in FEKO. I found that FEKO has an example of modeling a coaxial cable named as "example_34_aw.pre". But in the recent versions of FEKO, I couldnt find the example file in Examples guide. Do anyone has the file called as "example_34_aw.pre". The title of this example is named as "Example 34: Coaxial cable (modelled with surface triangles)". I found this sort of example in the pdf file, page number 3-140 "http://people.ee.ethz.ch/~fieldcom/pps-antenna/doc/ExampleGuide.pdf"
  15. Model Extents in FEKO

    Hi Andries, Thanks for your help. I realized there are some problems with the model. Now everything is pretty fine.