Howtosignalprocessing
- What does square law detector do?
- Is envelope detector and diode detector same?
- What is the limitation of square law demodulation which is resolved by envelope detector?
- What is the disadvantage of envelope detector?
What does square law detector do?
In electronic signal processing, a square law detector is a device that produces an output proportional to the square of some input.
Is envelope detector and diode detector same?
Envelope Detector
Here, the diode is the main detecting element. Hence, the envelope detector is also called as the diode detector.
What is the limitation of square law demodulation which is resolved by envelope detector?
Limitations of square law demodulator: Sqaure law demodulator is used to demodulate low level AM wave. This demodulator contains a square law device and low pass filter. The AM wave v1(t) is applied as an input to this modulator.
What is the disadvantage 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.
