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https://designers-guide.org/forum/YaBB.pl Simulators >> Circuit Simulators >> Root locus and Nyquist plots in cadence virtuoso ADE https://designers-guide.org/forum/YaBB.pl?num=1611017360 Message started by iVenky on Jan 18th, 2021, 4:49pm |
Title: Root locus and Nyquist plots in cadence virtuoso ADE Post by iVenky on Jan 18th, 2021, 4:49pm Hi, Is there a way to plot root locus and Nyquist plots in Cadence virtuoso (for example, when we run stb analysis for a feedback system)? |
Title: Re: Root locus and Nyquist plots in cadence virtuoso ADE Post by Frank Wiedmann on Jan 19th, 2021, 12:38am You can do a Nyquist plot by plotting the imaginary part of the loop gain against its real part. |
Title: Re: Root locus and Nyquist plots in cadence virtuoso ADE Post by iVenky on Jan 28th, 2021, 11:54am Thanks, do you know if there is a way to do root locus for an stb simulation? I would just like to find the location of poles/zeros based on an stb simulation and that's the purpose. |
Title: Re: Root locus and Nyquist plots in cadence virtuoso ADE Post by iVenky on Jan 29th, 2021, 3:09pm Is it fundamentally possible to find poles and zeros in stb analysis? |
Title: Re: Root locus and Nyquist plots in cadence virtuoso ADE Post by Frank Wiedmann on Feb 1st, 2021, 1:08am I don't think so. Spectre also has a pz analysis, but I have never used it. |
Title: Re: Root locus and Nyquist plots in cadence virtuoso ADE Post by iVenky on Feb 1st, 2021, 7:53pm I see. Thanks! I wish there was a way to find the location of poles and zeros approximately with stb analysis if I input an estimate of number of poles and zeros in the system. |
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