- Effective input noise temperature
telecommunications, effective input noise temperature is the source noise temperaturein 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 figurenumeric and 290 K the standard noise temperature, then the effective noise temperature is given by "T" n = 290("F"-1).
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