4-71
Random vibration’s contribution to
phase noise is given by:
e.g., if G = 1 x 10-9/g and f0 = 10 MHz, then
even if the
oscillator is completely noise free at rest, the phase “noise”
i.e., the spectral lines, due solely
to a vibration of power
spectral density, PSD = 0.1 g2/Hz
will be:
Offset
freq., f, in Hz
1
10
100
1,000
10,000
L’(f), in
dBc/Hz
-53
-73
-93
-113
-133
Random Vibration-Induced Phase Noise