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In an oscillator, phase noise is rapid, short-term, random fluctuations in the phase of a wave, caused by time domain instabilities.

Phase noise, L(f) in decibels relative to carrier power ( dBc ) on a 1 Hz bandwidth, is given by:

L(f) = 10log[0.5(S _φ(f ))]

where S _φ(f ) is the spectral density of phase fluctuations.

Source: Federal Standard 1037C

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Topics: Phase Noise, Phase (matter), Phase (waves), Phase Modulation...

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Phase distortion	Phase inversion	Phase jitter
Phase-locked loop	Phase noise	Phase perturbation
Phase-shift keying	Phase constant	Phase transition

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