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noise figure - how to transfer to ambient temperature

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liberal

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noise figure

HI:
I have some questions about noise figure,i need your help.
we konw noise figure is defined for a noise source at a reference temperature of 290K,then is the reference temperature same to environment temperature or the real temperature of the system at work?
and T=(F-1)To ,if my system is working at 55 deg, then is T is also =(F-1)290K?
thnk you.
 

Re: noise figure

liberal said:
HI:
I have some questions about noise figure,i need your help.
we konw noise figure is defined for a noise source at a reference temperature of 290K,then is the reference temperature same to environment temperature or the real temperature of the system at work?
and T=(F-1)To ,if my system is working at 55 deg, then is T is also =(F-1)290K?
thnk you.
Click to expand...

See this..
https://www.satsig.net/noise.htm
also this..
https://en.wikipedia.org/wiki/Noise_temperature



Regards,
Shiva
 

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