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 sp simulation with old dc operating point 

Last post Thu, Jun 25 2009 11:51 PM by Frank Wiedmann. 2 replies.
Started by mmmm 01 Oct 2008 06:31 PM. Topic has 2 replies and 3697 views
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  • Wed, Oct 1 2008 6:31 PM

    • mmmm
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    • Joined on Wed, Oct 1 2008
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    sp simulation with old dc operating point Reply

    Hi,

    I would like to match the input of  LNA. There is dc blocking at the input, so each time, the dc is the same, only mathcing component change for S11. How can I skip the dc part of the simulation to speed up the sp simulation.

    regards

    mmmm

    • Post Points: 35
  • Wed, Feb 25 2009 1:03 AM

    • Jim McMahon
    • Top 500 Contributor
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    • San Jose, CT
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    Re: sp simulation with old dc operating point Reply

    I believe the 2 analysis parameters you want to specify are:

    1. restart=no // to force re-use of the previous DC solution if if the conditions have changed

    2. prevvoppoint=yes // reuse the DC solution from a previous analysis (if available)

     These parameters can both be set from the spectre simulation interface as part of the SP-analysis setup.

     You also may try performing a component parameter sweep. This is assuming you are sweeping a design variable and that variable is controlling the parameter value of the matching component. This should also speed things up.

    Jim

    • Post Points: 5
  • Thu, Jun 25 2009 11:51 PM

    • Frank Wiedmann
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    Re: sp simulation with old dc operating point Reply

    The last message by TeddyNguyen contains a hidden link to simulationcredit1.com. Please remove this message. This guy has been spamming lots of forums in this way, probably in order to improve his Google ranking.

    • Post Points: 5
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Started by mmmm at 01 Oct 2008 06:31 PM. Topic has 2 replies.