Antenna Coupling with Field Source

FT
FT Altair Community Member
edited February 2021 in Community Q&A

Hello everyone,

 

I want to see coupling S11 (reflection coefficient) of two antenna which defined to FEKO as near-field source. When port is defined we see the S11 S22, S33 etc. But I can not defined port when adding near field. In literature, these coupling coefficients can be F-parameters. Is there anyone who know this problem?

Thank you in advance

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Answers

  • GGAMPALA
    GGAMPALA
    Altair Employee
    edited January 2021

    In Feko, you can use the near field data as the source for Tx antenna and as well as Rx antenna (the Rx antenna option will give you the power received). You can compute the coupling by taking the ratio of the Tx power to the Rx power.

  • Jaehoon
    Jaehoon
    Altair Employee
    edited January 2021

    In literature, these coupling coefficients can be F-parameters. -> Could you share the literature (or link) you mentioned? The literature looks interesting. Thank you.

  • FT
    FT Altair Community Member
    edited January 2021
    Jaehoon Kim_22316 said:

    In literature, these coupling coefficients can be F-parameters. -> Could you share the literature (or link) you mentioned? The literature looks interesting. Thank you.

    You can search on web or instead of it you can find it from the link;

    https://electronics.stackexchange.com/questions/418110/f-parameters-instead-of-s-parameters

  • FT
    FT Altair Community Member
    edited January 2021
    Gopinath Gampala_21873 said:

    In Feko, you can use the near field data as the source for Tx antenna and as well as Rx antenna (the Rx antenna option will give you the power received). You can compute the coupling by taking the ratio of the Tx power to the Rx power.

    Thank you so much for answer Mr. Gopinath. I've another problem that when I define the near field as receiving antenna and Tx antenna such as radiated near field. The simulation runs without any error. But at POSTFEKO, the results show a warning and it says "missing data". When I examine the .out file there is no error. It computes the radiated power and received power. So, what can be the problem according to you?

     

    Thanks

  • Jaehoon
    Jaehoon
    Altair Employee
    edited February 2021
    FT said:

    Thank you so much for answer Mr. Gopinath. I've another problem that when I define the near field as receiving antenna and Tx antenna such as radiated near field. The simulation runs without any error. But at POSTFEKO, the results show a warning and it says "missing data". When I examine the .out file there is no error. It computes the radiated power and received power. So, what can be the problem according to you?

     

    Thanks

    As long as you have right results, it would be all right. If you keep the waring, please consider updating Feko.

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