Envelope detector pdf

1. How does an envelope detector work?
2. What is an ideal envelope detector?
3. Is envelope detector and diode detector same?
4. What is RC in envelope detector?

How does an envelope detector work?

An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency amplitude modulated signal as input and provides an output, which is the demodulated envelope of the original signal.

What is an ideal envelope detector?

The ideal envelope detector is a circuit which takes the absolute value of its input, and then passes the result through a lowpass filter. The output from this lowpass filter is the required envelope signal.

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 RC in envelope detector?

Envelope Detection Primer. 1. FIGURE 1 shows the circuit diagram of an envelope detector. It consists simply of a diode and resistor-capacitor (RC) filter. On a positive half cycle of the input signal, the diode is forward biased and the capacitor C charges up rapidly to a peak value of the input signal.