Q6) An information signal s(t) is fed into an AM-DSB-C modulator with carrier frequency fo = 10 kHz. The modulated signa

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Q6 An Information Signal S T Is Fed Into An Am Dsb C Modulator With Carrier Frequency Fo 10 Khz The Modulated Signa 1 (65.9 KiB) Viewed 45 times

Q6) An information signal s(t) is fed into an AM-DSB-C modulator with carrier frequency fo = 10 kHz. The modulated signal is given by Sam(t) = 10 x (1 + 0.4s(t)) sin(2ttfet). Suppose the spectrum of s(t) is as shown in Fig. 26 and is zero for all frequencies below -3 kHz or above 3 kHz. s(f) 1 Fig. 26 -3kHz 0 ЗkHz f (a) Sketch the magnitude spectrum of Sam(t). (b) Estimate the bandwidth occupied by Sam(t). [3 marks] [3 marks]