noise figure
时间：04-09
整理：3721RD
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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.
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.
See this..
http://www.satsig.net/noise.htm
also this..
http://en.wikipedia.org/wiki/Noise_temperature
Regards,
Shiva