Discussion :: Communication Systems
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The received signal frequency at any time of a super-heterodyne receiver having IF = 456 kHz is 1 MHz. The corresponding image signal is
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A.
within the medium band
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B.
outside the medium band
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C.
depend upon modulation index
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D.
depends on Modulating frequency
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Answer : Option A
Explanation :
Image signal frequency = Received signal frequency - 2 x Intermediate frequency.
= 1 MHz - 2 x 456kHz
1 MHz - 912 kHz 88 kHz
which lies in medium bond.
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