Filters and IF Amplifiers Flashcards
1
Q
What is the primary purpose of the final IF amplifier 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.
