This converter changes the noise figure (in dB) of a system into its equivalent noise temperature in Kelvin. It helps engineers understand how much additional noise a component adds compared to an ideal noiseless system.
Formula
Tn = Tref × [ (10^(NF/10)) − 1 ]
Formula Explanation
- Tn is the noise temperature in Kelvin.
- Tref is the standard reference temperature, usually 290 K.
- NF is the noise figure in decibels (dB).
Example
Input: NF = 3 dB, Tref = 290 K
Result: Tn = 290 × (10^(3/10) − 1) = 290 × (1.995 − 1) = 288.6 K
Who uses it
Used by RF and microwave engineers to evaluate receiver sensitivity and system performance.