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calc_01a.php    5306 Bytes    12-02-2022 03:40:37


Noise Figure • Temperature Conversion


... converts between noise figure and the noise temperature.




Noise Figure [dB]  
Noise Temperature [K]
Reference Temperature [K]
 



✈ Some background




Noise temperature is the temperature at which a resistor (or other component) would generate the same amount of noise. It goes back to the familiar kTB calculation for thermal noise power.

It comes in handy at e.g. antennas, where it is hard to define a NF (noise-figure).

The formulas used are :


Noise Figure to Noise temperature Conversion


Note that the Reference Temperature is usually 290 K. (= 273.15 (Zero) + 16.85 (RTP)).




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t1 = 6587 d

t2 = 169 ms

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