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Flicker Noise Noise Folding Question

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teem

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Dear Friends:

Flicker noise is infinite at DC. If I pass flicker noise through an on/off switch with switching frequency w, what the output spectrum would be? Would the spectrum be infinite at w, 3*w, 5*w…etc?

Thanks and have a good day.
 

Switching folds (aliases) the noise above 1/2 the switching frequency, not below.
It will have little effect on the flicker (1/F) noise.
 

Flicker noise is infinite at DC.
Speaking properly, what tends to infinity in the flicker noise model is its power spectral density.

If I pass flicker noise through an on/off switch with switching frequency w, what the output spectrum would be? Would the spectrum be infinite at w, 3*w, 5*w…etc?
It does tend theoretically to infinity, like power spectral density of phase noise tends theoretically to infinity when frequency approaches the carrier frequency.

Z
 

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