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The diagonal clipping in Amplitude Demodulation (using envelope detector) can be avoided if RC time-constant of the envelope detector satisfies which of the following conditions?
(Here, W is message bandwidth and ωc is carrier frequency both in rad/sec)
- a)RC < 1/W
- b)RC > 1/W
- c)RC < 1/ ωc
- d)RC > 1/ ωc
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
The diagonal clipping in Amplitude Demodulation (using envelope detect...
Explanation:
In amplitude demodulation using an envelope detector, the received modulated signal is first rectified to remove the negative half-cycles, and then passed through a low-pass filter to obtain the envelope of the modulated signal. The RC time constant of the low-pass filter determines the response time of the envelope detector.
To avoid diagonal clipping, the RC time constant should satisfy the condition RC > 1/ωc, where ωc is the carrier frequency in rad/sec.
Reason:
Diagonal clipping occurs when the RC time constant is too small, causing the envelope detector to respond too quickly. This results in distortion of the demodulated signal, particularly in the presence of high-frequency components.
If the RC time constant is too small, the low-pass filter will not be able to smooth out the variations in the modulated signal, leading to the clipping of the higher frequency components. This clipping causes distortion in the demodulated signal, manifesting as diagonal lines on the output waveform.
By increasing the RC time constant, the low-pass filter can effectively smooth out the variations in the modulated signal, preventing diagonal clipping. This ensures that the demodulated signal accurately represents the original message signal.
Conclusion:
To avoid diagonal clipping in amplitude demodulation using an envelope detector, the RC time constant of the low-pass filter should satisfy the condition RC > 1/ωc. This ensures that the low-pass filter can effectively smooth out the variations in the modulated signal, resulting in a distortion-free demodulated signal.
In amplitude demodulation using an envelope detector, the received modulated signal is first rectified to remove the negative half-cycles, and then passed through a low-pass filter to obtain the envelope of the modulated signal. The RC time constant of the low-pass filter determines the response time of the envelope detector.
To avoid diagonal clipping, the RC time constant should satisfy the condition RC > 1/ωc, where ωc is the carrier frequency in rad/sec.
Reason:
Diagonal clipping occurs when the RC time constant is too small, causing the envelope detector to respond too quickly. This results in distortion of the demodulated signal, particularly in the presence of high-frequency components.
If the RC time constant is too small, the low-pass filter will not be able to smooth out the variations in the modulated signal, leading to the clipping of the higher frequency components. This clipping causes distortion in the demodulated signal, manifesting as diagonal lines on the output waveform.
By increasing the RC time constant, the low-pass filter can effectively smooth out the variations in the modulated signal, preventing diagonal clipping. This ensures that the demodulated signal accurately represents the original message signal.
Conclusion:
To avoid diagonal clipping in amplitude demodulation using an envelope detector, the RC time constant of the low-pass filter should satisfy the condition RC > 1/ωc. This ensures that the low-pass filter can effectively smooth out the variations in the modulated signal, resulting in a distortion-free demodulated signal.
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The diagonal clipping in Amplitude Demodulation (using envelope detect...
The diagonal clipping in AM using envelop detector can be avoided if
1/ ωc < rc="" />< />
We can say that RC depends on W, thus
RC < />
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The diagonal clipping in Amplitude Demodulation (using envelope detector) can be avoided if RC time-constant of the envelope detector satisfies which of the following conditions?(Here, W is message bandwidth and ωc is carrier frequency both in rad/sec)a)RC < 1/Wb)RC > 1/Wc)RC < 1/ ωcd)RC > 1/ ωcCorrect answer is option 'A'. Can you explain this answer?
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