Electronics Engineering Interview Question:

Explain the importance and effect of IF IN radio receiver?

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The superhet rodyne receiver is quite important in a radio receiver.

It enable the receiver to use a single frequency as the center frequency of the band-pass filter. this frequency is the Intermediate Frequency (IF).
The received signal is going through a frequency translation (in practice it goes through a mixer), which makes it
IF centered.

It should be noted that a static filter is much easier to build and is much more efficient.
Submitted by: Administrator