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

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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?

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Principles of Communications Systems, Modulation and Noise

ISBN: 978-8126556793

7th edition

Authors: Rodger E. Ziemer, William H. Tranter

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Question Posted: Sep 14, 2018 11:28 AM

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

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

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a From Figure 335 xt m t cos c t With the given relationship between x t and y t we can ...View the full answer

Principles of Communications Systems, Modulation and Noise

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