Engineering, 28.05.2021 20:00 emma3216
Consider a superheterodyne AM receiver with different standards using IF frequency of 280 kHz with adding format, AM range of 420 kHz-1800 kHz, and the maximum frequency of the baseband signal being assigned as 6 kflz. We are tuning to station 760 kHz (1 point per part):
(i) For IF filter, (center frequency, BW) is:.
(a) (760 kHz, 6 kHz).
(b) (280 kHz, 12 kHz).
(c) (280 kHz, 6 kHz).
(d) (760 kHz, 12 kHz).
(ii) For mixer filter, (center frequency, BW) is:___.
(a) (280 kHz, 12 kHz).
(b) (760 kHz, 6 kHz).
(c) (760 kHz, 12 kHz).
(d) (280 kHz, 6 kHz).
(iii) For audio filter, (center frequency, BW) is:.
(a) (0, 12 kHz).
(b) (280 kHz, 6 kHz).
(c) (0,6 kHz).
(d) (280 kHz, 12 kHz).
(iv) For the mixer oscillator the frequency is:___.
(a) 480 kHz.
(b) 1215 kHz.
(c) 940 kHz.
(d) 1040 kHz.
(v) The image station is at:.
(a) 1320 kHz.
(b) 1040 kHz.
(c) 11670 kHz.
(d) no image interference.
Answers: 2
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Consider a superheterodyne AM receiver with different standards using IF frequency of 280 kHz with a...
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