Question:
The envelope detector is a/an _______.
The envelope detector is a/an _______.
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Envelope detectors are simple, low-cost AM demodulators that work asynchronously.
Updated On: Jun 23, 2025
- Synchronous detector
- Asynchronous detector
- Product demodulator
- Coherent detector
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The Correct Option is B
Solution and Explanation
An envelope detector does not require a reference signal. It simply detects the amplitude envelope of the modulated signal and is commonly used in AM demodulation.
Since it does not require synchronization with the carrier wave, it is classified as an asynchronous detector.
Incorrect Options:
Synchronous detector: Requires a carrier reference.
Product demodulator: Used in synchronous detection.
Coherent detector: Another name for synchronous detector.
Since it does not require synchronization with the carrier wave, it is classified as an asynchronous detector.
Incorrect Options:
Synchronous detector: Requires a carrier reference.
Product demodulator: Used in synchronous detection.
Coherent detector: Another name for synchronous detector.
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