Question: Consider the system shown in Figure 3.35. Assume that the average value of m(t) is zero and that the maximum value of |m(t)| is M.

Consider the system shown in Figure 3.35. Assume that the average value of m(t) is zero and that the maximum value of |m(t)| is M. Also assume that the square-law device is defined by y(t) = 4x (t) + 2x²(t).

Figure 3.35

(a) Write the equation for y(t).

(b) Describe the filter that yields an AM signal for g(t). Give the necessary filter type and the frequencies of interest.

(d) What is an advantage of this method of modulation?

(1) x(t) +, g(t) () Square-law device Filter cos @t

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