Analog Communication - Electronic Engineering (MCQ) questions & answers for Q. 13740

Q.  Amplitude limiter in FM receivers are used to
- Published on 14 Oct 15

a. Remove amplitude variations due to noise
b. Filteration
c. Demodulation
d. Amplification

ANSWER: Remove amplitude variations due to noise
 
Amplitude limiter in FM receivers are used to remove the amplitude variations. The limiter does this by clipping the received modulated wave. In FM signal the frequency of the carrier is varied. So if there are any variations in the amplitude of the received wave, it is due to noise or interference in the communication channel. So these amplitude variations are removed by the amplitude limiters.

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