Far-Field is misaligned when aligning library antenna to a structure

A.Ibrahim
A.Ibrahim Altair Community Member
edited June 2023 in Community Q&A

Hello,
I am trying to place a Patch_truncated antenna from the library to a structure to simulate far-field,

When showing results on Postfeko, the antenna pattern results shown from the origin antenna placement(0,0,0) but not from the antenna position on the structure.
I figure out that I need to do the alignment twice, one for the antenna, and another for the far-filed in the configuration tab.
Is there is a solution whenever I do antenna alignment, the far-field is aligned as well?
Thanks!
A 

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Answers

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited June 2023

    Hi @A.Ibrahim ,

    If you use variables for the transformation of the antenna as well as for the origin of the workplane of the farfield requests, they would both move in the same way.

    Best regards,
    Torben

  • A.Ibrahim
    A.Ibrahim Altair Community Member
    edited June 2023

    Thanks Torben for the quick answer!
    Is there any document or a video shows in steps how to perform?
    If not, I will try to dig into it.

  • Torben Voigt
    Torben Voigt Altair Community Member
    edited June 2023
    A.Ibrahim said:

    Thanks Torben for the quick answer!
    Is there any document or a video shows in steps how to perform?
    If not, I will try to dig into it.

    Hi @A.Ibrahim ,

    I attached a simple example (in Feko version 2021.2 since I don't know which you are using).

    By changing the values of variables

    position_x
    position_y
    position_z

    both the antenna position and the farfield origin will change.

    Best regards;
    Torben

  • A.Ibrahim
    A.Ibrahim Altair Community Member
    edited June 2023

    Got it.
    Thanks again Torben!
    Best Regards!
    A

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