Question

Problems 4.5 specte Section 4.1 4.1 Let the input to a phase modulator be m(t) = ult - to), as shown in Figure 4.1(a). Assume that the unmodulated carrier is A.cos(21 ft) and that fato = n, where n is an integer. Sketch accurately the phase mod- ulator output for kp = n and it as was done in Figure 4.1(c) for k, = . and 4.2 Repeat the preceding problem for k, = -- and -1 4.3 Redraw Figure 4.4 assuming m(t) = A sin ( 21 fmt + ). 4.4 We previously computed the spectrum of the FM signal defined by

Need assistance with 4.2, and 4.3.

Answer 1