Английская Википедия:Effective input noise temperature

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In telecommunications, effective input noise temperature is the source noise temperature in a two-port network or amplifier that will result in the same output noise power, when connected to a noise-free network or amplifier, as that of the actual network or amplifier connected to a noise-free source. If F is the noise factor numeric and 290Шаблон:NbspK the standard noise temperature, then the effective noise temperature is given by T n = 290(F − 1).

References

Шаблон:FS1037C MS188

Шаблон:Noise

Шаблон:Telecomm-stub