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Simulators >> RF Simulators >> PLL phase noise simulation with behavioral models
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Message started by eewing on Feb 8^th, 2011, 9:26pm

Title: PLL phase noise simulation with behavioral models
Post by eewing on Feb 8^th, 2011, 9:26pm

I need help with PLL phase noise simulation and analysis. Your comments and suggestions are appreciated.

I've built time-domain PLL behavioral models following the paper "predicting the phase noise and jitter of PLL-Based Frequency Synthesizers". I made a current mismatch in the charge pump block, and tried to find the output spur caused by this mismatch. After the tran simulation in hspice, I processed the output periods.m file with the matlab code in page 45 in the paper.
It seems to me the output spectre is up to the frequency fout/2 (fout is the VCO output frequency).
My questions are, am I right to simulate the spur using behavioral model?
How can I change the processing code in order to see the spur nearby fout?

Thanks.