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how to get the frequency variable (Read 2439 times)
.matteo
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how to get the frequency variable
Jun 30th, 2009, 4:16pm  
Hi everybody,
  I am simulating the time delay of a feedback path and I would like to plot 'phaserad(mycurrent)/(2*pi*frequency) in order to have a plot of the time delay as a function of the frequency.

  The problem is that when write "freq" and try to plot it I get an error of unbounded variable. Does anybody know how to get the frequency variable from an AC simulation?

Thank you very much
-Matteo
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.matteo
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Re: how to get the frequency variable
Reply #1 - Jun 30th, 2009, 4:48pm  
I use Spectre on Virtuoso Analog Design Environment (ADE L)
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pancho_hideboo
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Re: how to get the frequency variable
Reply #2 - Jun 30th, 2009, 4:55pm  
.matteo wrote on Jun 30th, 2009, 4:16pm:
The problem is that when write "freq" and try to plot it I get an error of unbounded variable.
Does anybody know how to get the frequency variable from an AC simulation?
What vendor's simulator do you use ?

There are many simulators which have AC analysis. And there are many data format as output from simulator.
http://www.synopsys.com/Tools/Verification/AMSVerification/DesignAnalysis/Docume...

http://www.designers-guide.org/Forum/YaBB.pl?num=1196459940/1#1
http://www.designers-guide.org/Forum/YaBB.pl?num=1106643861/1#1
http://www.designers-guide.org/Forum/YaBB.pl?num=1205240723/9#9
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.matteo
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Re: how to get the frequency variable
Reply #3 - Jun 30th, 2009, 5:06pm  
Thanks a lot, the function xval() is exactly what I wasl looking for!
-Matteo
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