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Question
The diagrams below depict a modulation (left) and a demodulation(right).
(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?
(c) How would you qualify the demodulation in the figure 2 above, coherent or incoherent? Justify your answer.
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.
Write some disadvantages of loosely coupled systems More complicated due to the needed additional communication hardware. They are less portable and more expensive because o
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