Exercise: Radio Receivers

Questions for: Radio Receivers

A communication channel with additive white Gaussian noise, has a bandwidth of 4 kHz and an SNR of 15. Its channel capacity is
A:
1.6 kbps
B:
16 kbps
C:
32 kbps
D:
256 kbps
Answer: B
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High IF in a superheat receiver
A:
improves selectivity
B:
increases tracking problems
C:
decreases tracking problems
D:
reduces adjacent channel rejection
Answer: B
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Which of the following circuit cannot be used to demodulate SSB?
A:
Phase discriminator
B:
Produce detector
C:
Balanced modulator
D:
Beat frequency oscillator
Answer: A
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In a receiver, at higher frequencies
A:
tracking will be improved
B:
tracking will be poor
C:
selectivity will be poor
D:
image frequency rejection will be poor
Answer: A
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Superheterodyne receiver can be used in
A:
AM
B:
FM
C:
SSB
D:
All of the above
Answer: D
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