The signal level at the input of the amplifier is 120 mV, and the noise level is 6 mV. Calculate the noise figure of the amplifier if the signal-to-noise ratio at the output is 20 dB.
Added by Shane H.
Step 1
SNR is defined as the ratio of the power of a signal (meaningful information) to the power of background noise (unwanted signal). The SNR at the input can be calculated as follows: SNR_input = Signal level / Noise level = 120 mV / 6 mV = 20 Show more…
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