One of the main functions of the RF amplifier in a superheterodyne receiver is to
A. Provide improved tracking
B. Permit better adjacent-channel rejection
C. Increase the tuning range of the receiver
D. Improve the rejection of the image frequency
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Radio Receivers
A low ratio of the ac to the dc load impedance of a diode detector results in
A. Diagonal clipping
B. Poor AGC operation
C. Negative-peak clipping
D. Poor AF response
Indicate which of the following circuits could not demodulate SSB:
A. Balance modulator
B. Product modulator
C. BFO
D. Phase discriminator
If the intermediate frequency is very high (indicate false statement)
A. Image frequency rejection is very good
B. The local oscillator need not be extremely stable
C. The selectivity will be poor
D. Tracking will be improved
One of the following cannot be used to demodulate SSB:
A. Product detector
B. Diode Balance modulator
C. Bipolar transistor balanced modulator
D. Complete phase-shift generator
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