Envelop detection with low sample rate?

1. What are the drawbacks of envelope detector?
2. What is envelope detection method?
3. Why an envelope detector Cannot be used to for DSB-SC demodulation?
4. What is envelope detector sensitivity?

What are the drawbacks of envelope detector?

The envelope detector has several drawbacks: The input to the detector must be band-pass filtered around the desired signal, or else the detector will simultaneously demodulate several signals. The filtering can be done with a tunable filter or, more practically, a superheterodyne receiver.

What is envelope detection method?

This envelope detection method involves squaring the input signal and sending this signal through a lowpass filter. Squaring the signal effectively demodulates the input by using itself as its own carrier wave.

Why an envelope detector Cannot be used to for DSB-SC demodulation?

In addi- tion, it has some discontinuous points at ωt = nπ + π/2 where ω = 2π f and n = 0, 1, 2, · · · . Hence, the envelope detector cannot be used to demodulate DSB-SC signals.

What is envelope detector sensitivity?

It is shown that the sensitivity of a low power envelope detector can reach -62 dBm with a low power LNA and in presence of a CW blocker.