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What do you understand by the term “carrier”?

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What do you understand by the term “carrier”?

(a) waveform with constant frequency, phase and amplitude

(b) waveform for which frequency, amplitude or phase is varied

(c) waveform with high amplitude, low frequency and constant phase

(d) waveform to be transmitted

I got this question during an online exam.

My question is taken from Detection of AM Waves in section Amplitude Modulation of Analog Communications

1 Answer

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The correct choice is (b) waveform for which frequency, amplitude or phase is varied

The explanation: A carrier wave is modulated in terms of amplitude, frequency or phase, with respect to an input signal for conveying information. Carrier wave has generally higher frequency than the input signal.

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