Official PYQ · 2020Set 1 · Q42Analog CommunicationsMCQ2 marks

GATE EC 2020 Set 1 Q42 — Analog Communications

For the modulated signal $x\left ( t \right )=m\left ( t \right )\cos\left ( 2\pi f_{c}t \right )$ , the message signal $m\left ( t \right )=4\cos\left ( 1000\pi t \right )$ and the carrier frequency $f_{c}$ is $1\: MHz$ . The signal $x(t)$ is passed through a demodulator, as shown in the figure below. The output $y(t)$ of the demodulator is

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Published 10 Oct 2026

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