how to plot multiple curves in same figure

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Nudrat Sufiyan
Nudrat Sufiyan 2022-8-17
评论： Nudrat Sufiyan 2022-8-17
I want to plot Id-vds curve for different length of Aln as it is mentioned as 'daln' in code. I have plotted for 1nm -daln, and need graph for different daln =1.2,3,4,5 nm .
This is the code for daln = 1nm
clear all;
E0=8.85e-12;
Ealgan=10.31;
talgan=23e-9;
calgan=(Ealgan/talgan);
dit=1.2e12;
q=1.6e-19;
gamma=(1/(1+dit*q/calgan));
nd=1.5e16;
daln=1e-9;
fim=(5.1*1.6e-19);
xaln=(1.9*1.6e-19);
fi0=(3.4*1.6e-19);
fis0=(gamma*(fim-xaln)-(gamma*q*nd*daln/calgan));
sigmapol=3.38e17;
sigmaaln=3.38e17;
Ealn=(10.78*E0);
detaEc=(0.343*1.6e-19);
Vt=fis0-detaEc-(sigmapol*q*daln/Ealn);
cq=3.436e15;
ceq=(calgan*cq/calgan+cq);
mu=0.09;
g=33.3;
Vds=0:0.5:6;
vgs=input('ENTER THE vgs in volts');
m=length(Vds);
for i=1:m
if vgs < Vt
current(1,i)=0;
current1(1,i)=0;
elseif Vds(i) >= (vgs - Vt)
current(1,i)=((mu*ceq/2)*(g)*(vgs-Vt)^2); %Simplified equation by approximation
elseif Vds(i) < (vgs - Vt)
current(1,i)=(mu*ceq/2)*(g)*(2*(vgs-Vt)*Vds(i)-Vds(i)^2);%Added DIBL
end
end
plot(Vds,current(1,:),'b')
xlabel('Vds, V')
ylabel('Drain Current,A')
title('I-V Characteristics of a hemt')

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回答（1 个）

Jan
Jan 2022-8-17
Create a loop:
axes('NextPlot', 'on'); % As: hold on
...
for daln = 1:5
...
end
  3 个评论
显示 1更早的评论
Jan
Jan 2022-8-17
Try it. You cannot damage Matlab or the computer.
Set the axes() command e.g. on top of the code (after omitting the vrute clearing header "clear all", which is touzght in beginner lessons, but rarely useful in real programs).
Then replace the line
daln = 1;
by
for daln = 1:5
and insert
end
where you want to stop the loop.

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