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1. A rectangular pulse train s(t) is shown in figure is convolved with the signal cos2(4p x 103t). The convolved signal will be a





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  • By: guest on 02 Jun 2017 01.13 am
    First find the Fourier series of given pulse that is And fm from (2) ⇒ 4 kHz When we multiply x1(t) and x2(t - t) We get term like fs ± fm, 2fs ± fm, 3fs ± fm, 4fs ± fm and fs = 10 kHz fm = 4kHz Hence from above relation (10+4) kHz ⇒ 14 kHz signal will be present in x(t).
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