Incorrect reflection coefficient results

Abhishek K M
Abhishek K M Altair Community Member
edited October 2021 in Community Q&A

Hello all !

As my title suggests, I have been getting wrong reflection coefficient results for the designed antenna. I am using probe feed and CMA. To plot reflection coefficient, I am plotting the voltage source. For the same geometrical parameters, I am getting completely different results in HFSS.

Not sure where I am going wrong. I have attached the model below.

Any help is appreciated !

 

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Answers

  • Mel
    Mel Altair Community Member
    edited October 2021

    You have requested characteristic modes. The reflection coefficient will be plotted in POSTFEKO per mode.

    If you want the input reflection coefficient for all modes (basically without any characteristic mode analysis) then you need to request a StandardConfiguration.

    image

    Below I have solved this version.

    image

    You may need a finer mesh, especially for CM analysis where higher modes cannot be solved and tracked accurately without finer meshing.

    image

     

  • Abhishek K M
    Abhishek K M Altair Community Member
    edited October 2021

    Thanks a lot !

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