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https://designers-guide.org/forum/YaBB.pl Design >> RF Design >> PSRR simulation using PSS+PAC https://designers-guide.org/forum/YaBB.pl?num=1161801703 Message started by ezencir on Oct 25th, 2006, 11:41am |
Title: PSRR simulation using PSS+PAC Post by ezencir on Oct 25th, 2006, 11:41am Hello All, Does anyone know how to simulate AM/PM PSRR using PSS+PAC of SpectreRF? Regards |
Title: Re: PSRR simulation using PSS+PAC Post by Ken Kundert on Oct 25th, 2006, 12:07pm Yes, of course. What is your question? Does it concern the AM/PM, the PSRR, or the PSS+PAC? -Ken |
Title: Re: PSRR simulation using PSS+PAC Post by ezencir on Oct 25th, 2006, 1:45pm Hello Ken When you do AC and XF to get PSRR you get the rejection performance for additive noise. If you would like to simulate the rejection to amplitude or phase modulating power supply disturbances you need to use PSS and PAC in conjunction. The question is how you do it? That is what I am asking. Ertan ezencir wrote on Oct 25th, 2006, 11:41am:
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Title: Re: PSRR simulation using PSS+PAC Post by Ken Kundert on Oct 25th, 2006, 4:40pm You would specify pacmag=1 on your supply source, you would use the "modulated" version of PAC and select SSB/AM/PM. Run simulations. From Direct Plot, select PAC modulated, and plot AM and PM results. -Ken |
Title: Re: PSRR simulation using PSS+PAC Post by loose-electron on Nov 7th, 2006, 7:59am A comment on the circuitry if I may - When a system is matched ideally, the PSRR results will look pretty good. For something more closely related to silicon, statistical mismatch of all elements (Monte Carlo) will give a more menaingful set of numbers. Jerry |
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