matlab画传输线上电压分布曲线图

习题与作业：如图传输线特性阻抗Z0=50，求线上电压分布，并画出与z 的关系曲线（用matlab 划出曲线图）。

matlab 代码如下：

clear;clc;close all ;format long ;

w=0:0.001:0.5;

n=length(w);

kk=7:-1:1;

rf=(80./kk-50)./(80./kk+50);

swr=(1+abs(rf))./(1-abs(rf));

v1(kk)=5;

vv=5*swr;

vv(length(kk))=5/swr(length(kk));

for k=1:length(kk)

x(1+(k-1)*n:n+(k-1)*n)=w+(k-1)*0.5;

y(1+(k-1)*n:n+(k-1)*n)=abs(v1(k)/(1+rf(k))*(1+rf(k)*exp(-j*4*pi*(0.5-w))));

xmark(k)=0.25+(k-1)*0.5;

end

plot(x,y);grid on ;hold on ;

axis([-inf,inf,0,25]);

for k=1:length(kk)

plot(xmark(k),vv(k),'rs' , 'MarkerEdgeColor' , 'k' , 'MarkerFaceColor' , 'g' , 'MarkerSize' ,5);

text(xmark(k),vv(k),[num2str(vv(k),'%5.3f')],'EdgeColor' , 'red' , 'Verti calAlignment' , 'bottom' );

end

最终结果图如下

习题与作业：如图传输线特性阻抗Z0=50，求线上电压分布，并画出与z 的关系曲线（用matlab 划出曲线图）。

matlab 代码如下：

clear;clc;close all ;format long ;

w=0:0.001:0.5;

n=length(w);

kk=7:-1:1;

rf=(80./kk-50)./(80./kk+50);

swr=(1+abs(rf))./(1-abs(rf));

v1(kk)=5;

vv=5*swr;

vv(length(kk))=5/swr(length(kk));

for k=1:length(kk)

x(1+(k-1)*n:n+(k-1)*n)=w+(k-1)*0.5;

y(1+(k-1)*n:n+(k-1)*n)=abs(v1(k)/(1+rf(k))*(1+rf(k)*exp(-j*4*pi*(0.5-w))));

xmark(k)=0.25+(k-1)*0.5;

end

plot(x,y);grid on ;hold on ;

axis([-inf,inf,0,25]);

for k=1:length(kk)

plot(xmark(k),vv(k),'rs' , 'MarkerEdgeColor' , 'k' , 'MarkerFaceColor' , 'g' , 'MarkerSize' ,5);

text(xmark(k),vv(k),[num2str(vv(k),'%5.3f')],'EdgeColor' , 'red' , 'Verti calAlignment' , 'bottom' );

end

最终结果图如下