#### Problem Statement: Principles of Communications

**Noise Problem Solving**

A single stage amplifier has a 200 kHz bandwidth and a voltage gain of 100 at 290 K temperature. Assume that the external noise is negligible and that 1 mV signal is applied to the amplifier’s input. Calculate the output noise voltage if the amplifier has a 5-dB NF and the input noise is generated by a 2 kilo ohm resistor.

#### Problem Answer:

The output noise voltage is equal to **0.45 mV**.

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