Research of Phase Noise in Oscillator Based on Nonlinear Perturbation Analysis

Jayanta Mukherjee's theory on the phase noise of oscillator is introduced. Based on nonlinear perturbation analysis,this theory researches the phase noise using numerical analysis method with a combination of circuit parameters,and studies the effects of different types of noise sources. An ideal oscillator and a cross-coupled differential voltage-controlled oscillator are designed to proof-test the theory in terms of circuit. By comparing the phase noise from numerical analysis and practical circuit simulation,the results verify the validity of nonlinear perturbation analysis for phase noise,further revealing the physical meaning of phase noise.