Question

Match the modulation (List-1) with the type of demodulator (List-2):

• A. A - P, B - Q
• B. A - Q, B - R
• C. A - Q, B - P
• D. A - P, B - R

Hint:

Remember: AM uses envelope detection; FM uses frequency discrimination methods like slope or ratio detectors.

Answer 1

The Correct Option is A

Amplitude Modulation (AM) is demodulated using an Envelope Detector, which traces the envelope of the modulated wave to retrieve the original signal.
Frequency Modulation (FM), on the other hand, requires a Slope Detector (or frequency discriminator) to convert frequency variations into amplitude variations, which can then be further processed.
Hence, the correct matching is:
- AM $\rightarrow$ Envelope Detector (P)
- FM $\rightarrow$ Slope Detector (Q)