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noise temperature for an amplifer - need help

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noise temperature

for an attenuator at a physical temperature Tphys, the noise temperature is Te = (L − 1)Tphys.Then what about an amplifer ?
 

Re: noise temperature

Te (noise temperature) = (Fn-1)To

Fn = noise factor
To = reference temperature


Te = K To log-1[NF/10]-1

K is boltzman contant


source: radio technician handbook


may be it help you
 

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