Home Forums Usage Equations in nested simulations

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  • #6973
    Carsten
    Participant

      This schematic shows/tells what I want to do:

      schematic attached.

      I have problems understanding, in which order the equations are evaluated, especially in a nested simulation (s-param inside sweep) like this. Is there documentation about that?

      • This topic was modified 1 month, 1 week ago by maelh. Reason: Convert all remaining http links to https links
      #6975
      Carsten
      Participant

        I just noted, my variable abs_s11_min is negativ!

        It seems to be the real value of S[1,1] at the minimum of abs(S[1,1])

        #7022
        QucsStudio
        Keymaster

          Equations are evaluated at the time when they are needed.

          However, you are right. The min() function should be improved to return the complex value. Thanks for pointing that out!

          The problem with the schematic above is that xvalue() always corresponds to the first dependency, but you are trying to use the second dependency of S[1,1].

          #7100
          Carsten
          Participant

            Hi Michael,

            the same problem with the Min() function appears in the optimization sim.

            I want to minimize a goal that is complex. QS finds the value with the most negative Re(goal_variable).

            Probably based on the same source code piece

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