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Re: Conversion gain from any node in LC VCO to the phase noi
In this paper: A filtering technique to lower LC oscillator phase noise, Emad Hegazi, H. Sjoland, A. A. Abidi, IJSSC, Dec. 2001.
The authors showed the simulation results of conversion gain from voltage noise at any node in the oscillator to phase noise.
For example, the following figure plots the simulated conversion gain from gate-refered voltage noise in one of the differential pair FETs to phase noise, versus discrete frequencies of voltage noie which will produce close in phase noise