Costa’s receiver is used for ________(a) coherent detection of AM-SC signal(b) asynchronous detection of AM-SC signal(c) amplification of signal(d) frequency mixing of signalThe question was posed to me in an international level competition.I need to ask this question from Costas Loop in section Double Sideband Suppressed Carrier Modulation of Analog Communications

Costa’s receiver is used for ________(a) coherent detection of AM-SC

1.	Costa’s receiver is used for ________(a) coherent detection of AM-SC signal(b) asynchronous detection of AM-SC signal(c) amplification of signal(d) frequency mixing of signalThe question was posed to me in an international level competition.I need to ask this question from Costas Loop in section Double Sideband Suppressed Carrier Modulation of Analog Communications
Answer» Correct answer is (a) coherent detection of AM-SC signal Explanation: A Costa’s loop is BASED on phase-locked loop (PLL). The circuit RECOVERS carrier frequency from the suppressed-carrier MODULATED signals like DSBSC and SSBSC and phase modulated signals like FSK and BFSK. It is GENERALLY used for coherent detection of AM-SC signal in receivers.

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