shot noise


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Related to shot noise: thermal noise, partition noise

shot noise

See noise.

Shot Noise

 

random changes (fluctuations) in voltage and current relative to their mean value in the circuits of amplifiers, radios, and other electronic devices; caused by the shot effect in vacuum electronic and semiconductor instruments. For example, shot noise appears as acoustic noise in the loudspeaker of a radio, “snow” on a television screen, and “grass” on a radar screen. Shot noise is the basic component of the internal noises of electronic devices, which cause the distortion of weak signals and limit the sensitivity of amplifiers.

shot noise

[′shät ‚nȯiz]
(electronics)
Noise voltage developed in a thermionic tube because of the random variations in the number and the velocity of electrons emitted by the heated cathode; the effect causes sputtering or popping sounds in radio receivers and snow effects in television pictures. Also known as Schottky noise; shot effect.

shot noise

(Schottky noise) The random emission and velocity of electrons from a cathode, which was discovered by Walter Schottky. See Schottky.
References in periodicals archive ?
Now a new study has shown that shot noise can be eliminated at its microscopic origin.
As a historical remark, the nonequilibrium noise, (46) namely the shot noise was discovered 10 years earlier than the equilibrium noise, (35,36) which might signal that our daily life is essentially nonequilibrium.
where bit = x is from the "0" or "1", PIIN, shot noise, and thermal noise are considered in the photocurrent analysis, the effect of the dark current is neglected, [I.
Shot noise power at the receiving photodiode for SPD technique can be determined using (5) and (14):
2] region of the output noise spectrum, the total white noise power spectral density of the oscillator circuit is the shot noise of the transistor and the thermal noise of the resistor [1]
Wavelets allowed the researchers to increase the resolution of FRET results by reducing shot noise - distortion at a particular frequency - from the data.
Key words: the transverse hall current, supply-current-related sensitivity, noise equivalent magnetic induction, shot noise, noise spectral density
The ballistic spin-resolved shot noise and consequently Fano factor in Aharonov-Casher semiconducting ring is investigated in the present paper.
The two most often used classes of spatial Cox point processes are the log Gaussian Cox processes (Moller et al, 1998) and the shot noise Cox processes (Moller, 2003).
If ever along the way she shows some fearfulness, don't panic; simply let her run a while without a shot noise so she forgets about it, then back up a few steps, have a shot fired and quit for the day.
During the time that the stored minority carriers are being swept out, recombination noise and shot noise are being generated, and these processes add timing jitter to the output pulse.
The primary signal independent noise mechanisms in SWIR focal plane arrays are the shot noise generated by the dark current and the noise caused by the readout integrated circuit.