Please answer the following questions. 1. Please explain why we need image rejection filter or image rejection...

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Electrical Engineering

Please answer the following questions.
1. Please explain why we need image rejection filter or imagerejection mixer and when we need with detail explanation.
2. Please introduce a couple of methods to remove imagesignals.

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3.6 Ratings (616 Votes)

1 Ans Image rejection is very important criteria in designing IF based receiver uses the Variable frequency oscillator and signal of variable frequency oscillator will shift the received spectrum down to the equivalent centered spectrum with an intermediate frequencyAnd this shifting is done by RF multiplication process As as result this multiplication process affects many things not only the received spectrum but also the symmetrically located spectrum with respect to variable frequency oscillators frequency which means the due to multiplication one signal shifts down to the IF and See Answer

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