A receiver front end has two stages in cascade

PHYSICS · Subjective · Fermi University Physics · Electronics, Instrumentation & Communication · Feedback, operational amplifiers and analogue signal processing · Feedback, operational amplifiers and analogue signal processing

Electronics for Measurement, Ch Noise and the signal-to-noise ratio

Problem

A receiver front end has two stages in cascade. The first stage has a noise figure of

1.8\,\mathrm{dB}

and a power gain of

15\,\mathrm{dB}

; the second stage has a noise figure of

8.0\,\mathrm{dB}

. Calculate the overall noise figure of the two-stage chain, in decibels.

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