Error: transmission line requires valid port

Axel Sombo
Axel Sombo Altair Community Member
edited October 28 in Community Q&A

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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Answers

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited October 28

    Hi Axel,

    Could you share the model?

    Also I attached a small pdf with Tipps for new Feko users.

    Best regards,
    Torben

  • Axel Sombo
    Axel Sombo Altair Community Member
    edited October 28

    Hi Thorben, 

    Thanks for replying so fast! I could fix the problem but now I get an error 80 when I try to run the solver. 

    I atached my model.

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited October 28
    Axel Sombo said:

    Hi Thorben, 

    Thanks for replying so fast! I could fix the problem but now I get an error 80 when I try to run the solver. 

    I atached my model.

    Hi Axel,

    The .cfx file is the model, the .fek file contains information for POSTFEKO. Could you attach the .cfx file?

    Spoiler: The problem is probably the wire radius. If you look at the mesh of the model you'll see:

    image

    Best regards,
    Torben

  • Axel Sombo
    Axel Sombo Altair Community Member
    edited October 28

    yes sure ! I assume you mean the .out file right ?

  • Axel Sombo
    Axel Sombo Altair Community Member
    edited October 28

    i also have those one

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited October 28
    Axel Sombo said:

    yes sure ! I assume you mean the .out file right ?

    Thanks, .cfx file (model) is sufficient.

    Will look at it now.

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited October 28

    Hi Alex,

    Each of your wires has its own mesh radius defined. So far, so good. But unfortunately many of the the radii are too large, so the wires overlap. In addition, the short wires are meshed by the mesher with only one segment, which leads to Error 180.

    I have set all radii to 1e-5 m and applied a local mesh to all wires so that it is a working model. Have a look at the attachment.

    Best regards,
    Torben

  • kcojo
    kcojo
    Altair Employee

    Test Comment - Unconfirmed

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