The formula to calculate the Noise Temperature is:
\[ T_n = (F - 1) \cdot T_0 \]
Where:
Noise figure is a measure of degradation of the signal-to-noise ratio (SNR), caused by components in a radio frequency (RF) signal chain. It is the ratio of the output noise power of the actual receiver to the output noise power of an ideal receiver with the same overall gain and bandwidth when the receivers are connected to sources at the standard noise temperature. A lower noise figure indicates better performance.
Let's assume the following values:
Using the formula:
\[ T_n = (2 - 1) \cdot 290 = 290 \, \text{K} \]
The Noise Temperature (Tn) is 290 K.