Week 6 Assignment | Complete Solution

Week 6 Assignment

1.    Referring to the block diagram, which block is the:

(a)      RF amplifier

(b)    Mixer

(c)    Local Oecillator

(d)    IF amplifier

(e)    Discriminator

(f)    Audio Amplifier

2.    Referring to the block diagram above, what signal frequencies appear at the following points:

(a)    Point V

(b)    Point W

(c)    Point X

(d)    Point Y

(e)    Point Z

(f)    Point A

3.    If an FM receiver is tuned to receive a carrier frequency of 95.1 MHz and uses high-side injection, what would be the frequency of local oscillator ?

4.    An FM receiver has a local oscillator frequency of  123.9 MHz and uses high-side injection, what would be the frequency received station ?

5.    If an FM receiver is tuned to receive a carrier frequency of 95.1 MHz and uses low-side injection, what would be the frequency of local oscillator ?

6.    If an FM receiver is tuned to receive a carrier frequency of 88.3 MHz and is using low-side injection, what would be the image frequency be ?

7.    If an FM receiver is tuned to receive a carrier frequency of 100.7 MHz and uses low-side injection, what would be the frequency of local oscillator ?

8.    Comparing to AM receiver, explain the FM receiver in terms of stages or blocks which are not present in the AM receiver.

9.    What is the function of Limiter in the FM receiver?

10.    What is the reason we do not have AGC  circuit in FM rec eiver?