Explain the purposes of modulation and demodulation, Electrical Engineering

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Question

The diagrams below depict a modulation (left) and a demodulation(right).

1301_Explain the purposes of modulation and demodulation.png

(a) Express y(t), u(t) and z (t).

(b) What may happen to the demodulated signal y(t) if there is a phase shift between x(t) and the carrier signal?

i. Explain the purposes of modulation and demodulation.

ii. Give 2 synonyms in electronics of modulation and demodulation.

(e) Draw a electric circuit diagram for an enveloppe detection demodulator.

(f) Give 3 real life examples of an analog signal transmission.

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