• Source: Equivalent noise resistance

In telecommunications, an equivalent noise resistance is a quantitative representation in resistance units of the spectral density of a noise-voltage generator, given by





R

n


=



π

W

n




k

T

0







{\displaystyle R_{n}={\frac {\pi W_{n}}{kT_{0}}}}


where




W

n




{\displaystyle W_{n}}

is the spectral density,



k


{\displaystyle k}

is the Boltzmann constant,




T

0




{\displaystyle T_{0}}

is the standard noise temperature (290 K), so



k

T

0


=
4.00
×

10

−
21



[
W
s
]


{\displaystyle kT_{0}=4.00\times 10^{-21}\,[Ws]}

.
Note: The equivalent noise resistance in terms of the mean-square noise-generator voltage, e2, within a frequency increment, Δ f, is given by





R

n


=



e

2



4
k

T

0



Δ
f



.


{\displaystyle R_{n}={\frac {e^{2}}{4kT_{0}\,\Delta f}}.}


This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22.




See also


Equivalent input noise
Effective input noise temperature

Kata Kunci Pencarian:

• Equivalent noise resistance
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• List of noise topics
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• Noise pollution
• Total variation denoising