Reference no: EM13876247
A super heterodyne receiver has if IF of ( MHz and tunes the frequency range from 50 to 60 MHz. The mixer uses low-side injection of the local oscillator signal. Calculate the range of local oscillator frequency.
5. Explain how image frequency signals are received in a superheterodyne receiver. How can these signals be rejected?
11. What is AGC? Why is it required in a practical receiver?
28. A tuned circuit has a Q of 60 at 5MHz. Find its bandwidth at 5MHz and 20MHz.
29. A superheterodyne receiver is tuned to a frequency of 5MHz when the local oscillator frequency is 6.65MHz.
(a) What is the IF?
(b) Which type of injection is in use?
30. A superheterodyne receiver has an IF of 9MHz and tunes the frequency range from 50 to 60MHz. The mixer uses low-side injection of the local oscillator signal. Calculate the range of local oscillator frequencies.
32. One receiver has a sensitivity of 1µV and another has a sensitivity of 10dBf under the same measurement conditions. Both receivers have an input impedance of 50Ω. Which receiver is more sensitive?
36. An AM broadcast receiver with high-side injection and an IF of 455kHz is tuned to a station at 910kHz.
(a) What is the local oscillator frequency?
(b) What is the image frequency?
(c) Find four other frequencies that could be picked up by this receiver?
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Calculate the range of local oscillator frequency
: A super heterodyne receiver has if IF of ( MHz and tunes the frequency range from 50 to 60 MHz. The mixer uses low-side injection of the local oscillator signal. Calculate the range of local oscillator frequency.
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