1.

What are important considerations while selecting an IF of a radio receiver?

Answer»

(i) A lower value of IF improves selectivity’ but elimination of image frequency becomes difficult.

(ii) If IF is low, the selectivity becomes two sharp resulting in sideband cutting. Very high selectivity makes a receiver more difficult to tune oscillator circuits.

(iii) IF should not be too high because high IF leads to reduction in selectivity, gam sue adjacent channel rejection.



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