at 1. a) The spectrum of a DSBSC modulated signal, y(t), is shown in Figure 1(a) below. Also, assume y(t) is processed by the system shown in Figure 1(b) below. Please sketch the spectrums of the waveforms at points (a), (b), (c), (d) and (e). 40 CHE) 464) LPE 702 Wez+27B2 prBy EE) " , WA+2AB, zasunt) ZPF GB 2003 (De Werlt D 28 elt Anh b) The small signal model of PLL circuit is shown in Figure 1 below: 0445)+ Isput the output K= s Figa Dyes StARHUS Find where 0:(t) and 0.(t) denote the phases of the input and output waveforms, respectively, 0e(t) denotes the phase error, and H(s) is the transfer function of the loop filter circuit shown in Figure 2. i) Assuming AK = 1, find the transfer function between 0e(s) and 0:(s). ii) Comparing the denominator of the above transfer function with (s2 +260,8 +0.), what is the value of the damping ratio, 5, in this case? Assuming input, 0:(t) = (1++ 2t)u(t), find the steady state phase error, 0.(t)