Howtosignalprocessing
- What is one of the great advantages of the diode envelope detector?
- Why the envelope detector is so popular in AM demodulation?
- Why do we need envelope detector?
- What are the advantages of practical diode detector?
What is one of the great advantages of the diode envelope detector?
The main advantage of this form of AM Demodulator is that it is very simple and cheap! Just one diode, one capacitor, and one resistor. That's why it is used so often. However, it does suffer from some practical problems.
Why the envelope detector is so popular in AM demodulation?
Envelope detector is used to detect (demodulate) high level AM wave. Following is the block diagram of the envelope detector. This envelope detector consists of a diode and low pass filter. Here, the diode is the main detecting element.
Why do we need envelope detector?
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 are the advantages of practical diode detector?
Low cost: The diode detector only requires the use of a few low cost components. This made it ideal for use in transistor (and valve / vacuum tube ) radios using discrete components. Simplicity: Using very few components, the Diode AM detector was easy to implement. It was reliable and did not require any setup.
