Physical processes of phase noise in differential LC oscillators

By J. Rael, Asad A. Abidi. Proceedings of the IEEE Custom Integrated Circuits Conference, 2000

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Low-power low-phase-noise differentially tuned quadrature VCO design in standard CMOS (2001, background): “Equation (9) clearly shows that, despite the unavoidable high series resistances in standard CMOS processes, phase noise still can be optimized.”
Planar Bulk MOSFETs Versus FinFETs: An Analog/RF Perspective (2006, methodology): “This value is also used to calculate the phase noise, as in [12].”
Phase Noise and Jitter in CMOS Ring Oscillators (2006, methodology): “The mechanisms of phase noise in the commonly used differential LC oscillator (Fig. 15) are well understood [ 36 ].”
A filtering technique to lower LC oscillator phase noise (2001, background): “Rael’s analysis [5] shows how current-source noise creates phase noise in the oscillator.”
A low-phase-noise 5-GHz CMOS quadrature VCO using superharmonic coupling (2003, background): “The oscillation frequency is lower than the tank resonance frequency (about 5 GHz), since in the even mode, the tail capacitance is seen in parallel to the tank [11].”