(F)Element 4-46 Filters and IF Amplifiers Flashcards
1
Q
What is the primary purpose of the final IF amplifiers stage in a receiver?
A
Gain
2
Q
What factors should be considered when selecting an intermediate frequency?
A
image rejection and selectivity
3
Q
What is the primary purpose of the first IF amplifier stage in a receiver?
A
selectivity
4
Q
What parameter must be selected when designing an audio filter using an op-amp?
A
bandpass characteristics
5
Q
What are the distinguishing features of a Chebyshev filter?
A
it allows ripple in the passband
6
Q
When would it be more desirable to use an m-derived filter over a constant K-filter?
A
when you need more attenuation at a certain frequency that is too close to the cut-off frequency for a constant k-filter
