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The diagonal clipping in Amplitude Demodulation (using envelope detector) can be avoided if RC timeconstant of the envelope detector satisfies the following condition, (here W is message bandwidth and ω is carrier frequency both in rad/sec)(a) RC< 1/ W(b) RC> 1/ W(c) RC< 1/ \(\omega\)(d) RC> 1/\(\omega\) |
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Answer» (a) RC< 1/ W It is seen that to avoid negative peak clipping also said diagonal clipping the RC time constant of detector should be τ< 1/fm Note fm is maximum modulating frequency i.e. the bandwidth w RC< 1/w |
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