Howtosignalprocessing
- What does the envelope detector do?
- What is envelope detection in communication?
- Is envelope detector and diode detector same?
- What is an ideal envelope detector?
What does the envelope detector do?
An envelope detector can be used to demodulate a previously modulated signal by removing all high frequency components of the signal. The capacitor and resistor form a low-pass filter to filter out the carrier frequency.
What is envelope detection in communication?
An envelope detector is an electronic circuit that takes a high-frequency signal as input and provides an output which is the envelope of the original signal. ( ωc » ω m ) It consists of two main elements: Diode / rectifier - serves to enhance one half of the received signal over the other.
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 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.
