Flicker Noise Noise Folding Question

Status
Not open for further replies.
T

teem

Junior Member level 1
Joined
Nov 17, 2009
Messages
16
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,408
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.
 

teem said:
Flicker noise is infinite at DC.
Click to expand...
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?
Click to expand...
It does tend theoretically to infinity, like power spectral density of phase noise tends theoretically to infinity when frequency approaches the carrier frequency.

Z
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…