A generalised Brownian motion model of RF spectral dispersion due to phase noise
- Resource Type
- Conference
- Authors
- Siddiq, Kashif; Watson, Robert J.; Pennock, Steve R.
- Source
- 2017 European Radar Conference (EURAD) Radar Conference (EURAD), 2017 European. :533-536 Oct, 2017
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Signal Processing and Analysis
Transportation
Phase noise
Radio frequency
Correlation
RF signals
Dispersion
Fourier transforms
Gaussian noise
- Language
In this work we present a unified Brownian motion-based model for the dispersion in the RF spectrum of oscillators due to the phase and frequency noise processes. A novel analysis of the spectral dispersion due to random-walk frequency noise will be presented that shows the possibility of the existence of satellite peaks around the mainlobe of the RF spectrum, along with time-varying spectral broadening. Fourier Transform based models will be used for the even-order phase noise process, and fractional calculus based models will be used for the odd-order flicker phase and frequency processes. The generalised Gaussian function (GGF) is shown to be an appropriate model for the RF autocorrelation function in all cases.