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Ronan Asked :

27-05-2021 Coherent Detection

Q. Envelope detector consists of?

A. Rectifier and high pass filter
B. Rectifier and low pass filter
C. Amplifier and low pass filter
D. Amplifier and high pass filter


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Divesh
Commented on 2021-06-06 12:42:01 (IST)

Answer - B. Rectifier and low pass filter


Explanation - The envelope detector is a very simple method of demodulation. It consists of a rectifier (anything that will pass current in one direction only), and a low - pass filter. The rectifier may be in the form of a single diode, or may be more complex.