Output Variables with two arguments (i.e. deriv) in Ansys HFSS 19.1

- November 5, 2018 at 11:32 pm
  
  l_smith
  Subscriber
  
  I can't seem to set an output variable with two arguments. For me, I would like to calculate the group velocity from the complex propagation constant, so I would like to plot:
  
  GV = 1/deriv(im(Gamma(1)), 2*pi*Freq)
  
  According to the HFSS help documentation this should be possible:
  
  deriv(quantity, SweepVariable) explicitly means derivative over the sweep variable specified in the second argument (such as "Freq").
  
  Except I can't get 'deriv' to work with any two arguments, meaning:
  
  deriv(Freq, Freq)
  
  also doesn't work. 'deriv(Freq)' (one argument) works fine using the primary sweep.
  
  Am I missing something obvious?
  
  Thanks for any help!
  
  note: I know I can use the group delay variable, but that's not what I want
- November 14, 2018 at 10:31 am
  
  Rob
  Forum Moderator
  
  I've checked, and this has been logged as a problem: you're (probably) not missing anything obvious.
- May 27, 2019 at 1:59 am
  
  banaful2464
  Subscriber
  
  I am having the same problem. Is there any solution?
- May 27, 2019 at 2:04 am
  
  l_smith
  Subscriber
  
  I never heard anything else from this, I just ended up exporting the data then using Python to perform whatever operations that I wanted.
  
  Good luck!
- August 5, 2020 at 9:11 am
  
  KapilGavali
  Subscriber
  
  is the above problem solved?n