4-70
Sinusoidal vibration produces spectral
lines at ±fv from the
carrier, where fv is the vibration frequency.
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 sine vibration level of
1g will be;
Vibr.
freq., fv, in Hz
1
10
100
1,000
10,000
-46
-66
-86
-106
-126
L’(fv), in dBc
Sine Vibration-Induced Phase Noise