Phase noise in a PLL using @DS

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tromeros

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Hi to all,
I have designed a ring oscillator in ADS and I simulate its phase noise using harmonic balance analysis. When I use the specific oscillator in a PLL, with a divider, phase detector and filter, I want to simulate the resulting phase noise in its output. However this is not possible in ADS using harmonic balance as far as I know. What alternatives do I have? Thanks in advance.
 

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