Question

Asked Feb 11, 2020

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Noise Figure of an amplifier is given as 10 dB. If the ambient temperature is 290 K, then what will be the equivalent noise temperature?

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Step 1

The noise figure (*NF*) and noise factor (*F*) of an amplifier are related by the following equation:

In this case, the values of the noise figure of the amplifier and the ambient temperature are given as

Step 2

Using equation (1), the value of the noise factor of the amplifier will be

Step 3

The equivalent noise temperature of the amplifier depends on the noise factor of the amplifier and it can be expressed as

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