2013/10/28 by Eyal Kenig, M. C. Cross, Jeff Moehlis +1
Computer Science · Engineering · Physics and Astronomy · #Advanced MEMS and NEMS Technologies #Amplifier #Amplitude #Computer science #Control theory (sociology) #Mechanical and Optical Resonators #Negative feedback #Noise (video) #Noise figure #Nonlinear Dynamics and Pattern Formation #Optics #Optoelectronics #Oscillation (cell signaling) #Oscillator phase noise #Phase noise #Physics #Quantum mechanics #Resonator #Voltage #cond-mat.other
paper · pdf · doi:10.1103/physreve.88.062922
arxiv created 2013/10/28 · openalex publication_date 2013/12/23 · arxiv updated 2015/06/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the role of amplifier saturation in eliminating feedback noise in self-sustained oscillators. We extend previous works that use a saturated amplifier to quench fluctuations in the feedback magnitude, while simultaneously tuning the oscillator to an operating point at which the resonator nonlinearity cancels fluctuations in the feedback phase. We consider a generalized model which features an amplitude-dependent amplifier gain function. This allows us to determine the total oscillator phase noise in realistic configurations due to noise in both quadratures of the feedback, and to show that it is not necessary to drive the resonator to large oscillation amplitudes in order to eliminate noise in the phase of the feedback.