Analog Communication - Electronic Engineering (MCQ) questions & answers for Q. 13726
Q. The costas receiver is used for - Published on 14 Oct 15a. FM signal
b. DSB-SC signal
c. PCM signal
d. DM signal
ANSWER: DSB-SC signal
Costas receiver is a synchronous receiver system used for demodulating DSB-SC waves. The incoming modulated carrier is applied at two inputs of the coherent detectors of the receiver. The locally generated carrier applied to the two inputs is however in phase quadrature with each other. The frequencies of the local carriers are adjusted as same as the carrier frequency of the received signal.
