The Designer's Guide Community Forum https://designers-guide.org/forum/YaBB.pl Simulators >> RF Simulators >> Spectre RF PAC analysis for PLL closed loop model https://designers-guide.org/forum/YaBB.pl?num=1405931340 Message started by dark_knight on Jul 21st, 2014, 1:29am

Title: Spectre RF PAC analysis for PLL closed loop model Post by dark_knight on Jul 21st, 2014, 1:29am Hi, I want to analyze the effect of VCO open loop noise getting aliased due to down-sampling by feedback divider. Until now I have been using a s-domain based PLL closed loop model using ideal components. I feed the VCO open loop noise into this model at the appropriate point to get the closed loop noise output. But this doesn't capture the effect of aliasing. So can I use a PSS+PAC analysis in SpectreRF to capture this effect ?

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