Question

PLZ shows you Matlab Code

X(t) 2 2 46 1. compute the Fourier Series coefficients, ck for the signal x(t) 2. plot magnitude of c and the phase of ck in separate plots (use subplot command) plot the Fourier Series coefficients for the square wave signal: ck(12/9) sinc(2"k/3)

Answer 1

Soluton m Tn ㄒ 2 大d臭- 2 2 2. 2 2

m. an 2. 4 2 ス K aa n

clc;
close all;
clear all;
k=-5:0.1:5;
ck=(2*pi*k.*sin(2*pi*k)+cos(2*pi*k)-1).*(pi*k).^(-2)
cphase=0*k;
subplot(2,1,1)
stem(k,ck)
title('Subplot 1: magnitude plot')

subplot(2,1,2)
ylim([-2 2])
stem(k,cphase)

title('Subplot 2: phase plot')

Subplot 1: magnitude plot 5 4 3 -2 0 1 2 3 4 5 Subplot 2: phase plot 0.5 0.5 5 4 3 2-1 0 2345

clc;
close all;
clear all;
k=-5:0.01:5;
ck=(12/9)*sinc(2*k/3);
plot(k,ck)

1.4 1.2 0.8 0.6 0.4 0.2 0 -0.2 -0.4 5 4 3 2-1 0 2345