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noise temperature

(a measure of noise in electronic devices)

Noise temperature is a measure of noise in electronic devices (or virtually anything that carries electricity), expressed as a temperature, as if the noise is thermal noise resulting from a device's temperature. Thermal noise is a primary cause of noise in electronics, and in that case, expressing it as the temperature is an obvious concept, but other sources of noise can be expressed as a temperature, allowing a means of comparison of noise contributors. Antenna temperature is an expression of antenna noise in such manner.

Noise temperature is defined as:

Tnoise = P / ( B kB )


Referenced by:
antenna temperature
thermal noise