Noise temperature is the noise power of a component that is introduced into a system i.e it is a way to express noise in terms of an equivalent temperature. The noise temperature is directly proportional to the temperature in degrees Kelvin. It goes to 0 at 0°K.
Calculate the Noise Temperature
dB
K
Result
K
Formula for Noise Figure to Noise Temperature Converter
Noise Figure is the measure of signal degradation caused by various components in a system. It is used to characterize the performance of electronic circuits, radar receivers, amplifiers, communication systems, and other circuits. Noise figure is defined as the logarithmic value of noise factor, which is the measure degradation of the signal to noise ratio (SNR) of a system.
Mathematically, noise figure is defined as,
Lower the noise figure, better will be the performance of the system.
Noise Temperature is a way of expressing the noise in an electronic system in terms of an equivalent temperature. It is not the physical temperature of the system, but a theoretical value that indicates an equivalent temperature required to produce a specific amount of noise power in the system.
Noise Temperature can be used to characterize and evaluate various systems such as measuring the noise level in front-end amplifiers and cascaded amplifier stages. Other applications include radio astronomy and radar receivers.
Formula for Converting from Noise Figure to Noise Temperature
Where,
‘TREF‘ is the reference temperature (in Kelvins)
‘NF‘ is the noise figure (measured in decibels or dB)
This tool allows users to enter the noise figure as input in decibels, which will be converted into its equivalent noise temperature value in Kelvins.