Discussion
Which term describes a receiver's ability to reproduce the modulation faithfully?
Answer: C
Fidelity is the term, and it is limited chiefly by the intermediate filter width and by the detector's linearity. Selectivity is the rejection of other channels, sensitivity the ability to use weak signals, and image rejection the suppression of one particular interfering frequency. The three classical figures of merit pull against one another, which is why a receiver specification is a set of compromises rather than a list of maxima.
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