1) A 1500-kHz carrier and kHz intelligence signal are combined in a nonlin-ear device. List all the frequency components produced. 2) If a 1500-kHz radio wave is modulated by a 2-kHz sine-wave tone, what frequencies are contained in the modulated wave (the actual AM signal)? 3) An unmodulated carrier is 300 V p-p. Calculate %m when its maximum p-p value reaches 400, 500, and 600 V.
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Adi S.
A periodic composite signal contains frequencies from 100 to 500 kHz with a step of 40 kHz. The peak amplitude is 100 V for the lowest and highest signals and is 300 V for the 300 kHz signal. Assuming that the amplitudes change gradually from the minimum to the maximum, draw the frequency spectrum.
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