GATE EC 2022: Communication System Quiz 3

A super heterodyne receiver uses an IF frequency of 455 kHz. The receiver is tuned to a transmitter having a carrier frequency of 1120 kHz. The permissible frequencies of the local oscillator are

An FM signal with a deviation δ is passed through a mixer and has its frequency reduced fivefold. The deviation in the output of the mixer is

A super heterodyne receiver is designed to receive transmitted signals between 5 and 10 MHz. High – side tuning is to be used. The tuning range of the local oscillator for IF frequency 500 kHz would be

A super heterodyne receiver is to operate in the frequency range 550 kHz – 1650 kHz, with the intermediate frequency of 450 kHz. Let r = C_max / C_min denote the required capacitance ratio of the local oscillator and f’_c denote the image frequency (in kHz) of the incoming signal. If the receiver is tuned to 700 kHz, then

A super heterodyne FM receiver operates in the frequency range of 88 – 108 MHz. The IF and local oscillator frequency are chosen such that f_IF < f_LO. The image frequency must fall outside of the 88 – 108 MHz region. The range of variation in f_LO is

A super heterodyne receiver uses an IF frequency of 455 kHz. The receiver is tuned to a transmitter having a carrier frequency of 2400 kHz. High – side tuning is to be used. The image frequency will be _ _ _ _ _ _ _ _ kHz.