A periodic signal x(t) = 2sin(2t) is multiplied by a periodic rectangular pulse train s(t) with fundamental frequency f0 = 4 Hz and the fundamental rectangular pulse given by
a) Please provide the expression for the periodic rectangular pulse train.
b) Please calculate the period of the resulting modulated signal.
c) Please calculate the frequency spectrum of the modulated signal.
d) Please determine the bandwidth of the modulated signal.