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2D Sweep in Spectre Netlist

KC202505278026

Hi, I want to know how to sweep 2 parameters at the same time in a Spectre netlist.

For example, following is sweep W and L separately:

// DC sweep
dcSweepW dc param=WMASK start=9u stop=0.288u step=-0.01u
dcSweepL dc param=LMASK start=9u stop=0.243u step=-0.01u
 
Is that possible to sweep all combinations of W and L, like 2D sweep?
Any answer is welcome, thank you.

  • First of all, posting technical questions in the Feedback, Questions and Suggestions forum is not the right place - that's for issues related to the forums themselves. I moved your post into an appropriate forum.

    To do what you want, you need to use the sweep analysis:

    // DC sweep
    dcSweepW sweep param=WMASK start=9u stop=0.288u step=-0.01u {
      dcSweepL dc param=LMASK start=9u stop=0.243u step=-0.01u
    }
    You can nest sweep analyses as you want, with the body (in curly brackets) representing the analyses that are repeated for each sweep point.
     
    Andrew
  • in reply to Andrew Beckett

    Hi Andrew,

    Thank you very much for your quick and clear response, and for moving my post to the correct forum. Your explanation about using nested sweep analyses in Spectre was exactly what I needed. I appreciate your help.

    Sincerely,

    Chen

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