MATLAB (Fourier Series ,pulstran함수,phase spectrum)문제풀기

소개글

MATLAB (Fourier Series ,pulstran함수,phase spectrum)문제풀기에 대한 보고서 자료입니다.

목차

1. matlab pulstran함수를 이용하여 다음 주기함수를 그리시오.

2. 위함수를 Fourier Series를 도시하라..

3.다음 함수를 -10<= t =<10구간에서 plot 하시오
(a) f(t)=e-[t]
(b)-10<= t =<10구간에서 Fourier 변환을 통하여(FFT)를 이용하여 amplitude와
phase spectrum을 그리시오

본문내용

l('t');
end
(a)
close all;
clear all;
clc;
%data1
t=-2:0.01:2;
y=rectpuls(t,1/4);
subplot(221);
plot(t-0.125,y,'b','linewidth',2);
grid on;
axis([-2 2 -1 2]);
ylabel('X(t)')
xlabel('t');
title('\Pi (t)')
%data2
t2 = -2: 0.01 : 3;
D = -1/8-4 : 1 : 4;
Y = pulstran(t2,D,'rectpuls',1/4);
subplot(222);
plot(t2,Y,'r','linewidth',2);
grid on;
axis([-2 3 -1 2]);
ylabel('X(t)');xlabel('t');
title('Pulse Train');
echo on
fnct='rectpuls1';
a=-0.5; b=0.5; n=24;tol=[];
xx=fseries(fnct,a,b,n,tol,1/4);
xx1=xx(n+1:-1:2);
xx1=[conj(xx1),xx];
absxx1=abs(xx1);
n1=[-n:n];
subplot(223);
stem(n1,absxx1);
grid on;
title(‘The Discrete Magnitude Spectrum');
phasexx1=angle(xx1);
subplot(224);
stem(n1,phasexx1);
grid on;
title('The Discrete Phase Spectrum');
end
(b)
close all;
clear all;
clc;
%data1
t=-2:0.01:2;
y=tripuls3(t,1);
subplot(221);
plot(t,y,'b','linewidth',2);
grid on;
ylabel('X(t)');
xlabel('t');
title('\Pi (t)');
axis([-2 2 -2 2]);
%data2
t2=-2:0.01:3;
D=[-2:1: 3];
y2=-pulstran(t2, D, 'tripuls',1)+1;
subplot(222);
plot(t2,2*y2-1,'r','linewidth',2);
grid on;
ylabel('X(t)');
xlabel('t');
title('Pulse Train');
axis([-2 3 -2 2]);
echo on
fnct='tripuls3';
a=-0.5;
b=0.5;
n=24;
tol=[];
xx=fseries(fnct,a,b,n,tol,1);
xx1=xx(n+1:-1:2);
xx1=[conj(xx1),xx];
absxx1=abs(xx1);
n1=[-n:n];
subplot(223);
stem(n1,absxx1);
grid on;
title('The Discrete Magnitude Spectrum');
phasexx1=angle(xx1);
subplot(224);
stem(n1,phasexx1);
grid on;
title('The Discrete Phase Spectrum');
end
(a) rectpuls1
(b)tripuls3

키워드

MATLAB,   Fourier Series,   pulstran함수,   phase spectrum,   전자응용,   전자실습,   MATLAB소스,   주기함수