MATLAB: How can i get a square wave in matlab

MATLABplottingsquare wave

I want to plot a periodic square wave in matlab and the period T has to be 3. How can i plot a sqaure wave the repeats itself every (T=3) ? help please and thank you!

Best Answer

Something like this?

t = linspace(0,20,1000) ;
T = 3 ;
x = sign(sin(2*pi*(1/T)*t)) ;
plot(t,x,'b-')

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MATLAB: Square wave

RESOLUTION = 1000;   %whatever is appropriate
DUTYCYCLE = 0.73;    %e.g. 73% on, 27% off
NUMBEROFCYCLES = 18;  %as appropriate
basepulse = ones(1,RESOLUTION);
squarepulse = basepulse;
squarepulse(floor(DUTYCYCLE * RESOLUTION) + 1 : end) = 0;
wavetrain = repmat(squarepulse, 1, NUMBEROFCYCLES);

MATLAB: Amplitude of square wave

What I have seen that, you b is look like as following-

A=2; f=3;
t=0:.01:10;
a=A*sin(2*pi*f*t);
%figure, plot(t,a);
b=A*sin(2*pi*f*t) + A*sin(3*2*pi*f*t)/3+A*sin(5*2*pi*f*t)/5+A*sin(7*2*pi*f*t)/7;
%[pks,locs]=findpeaks(b);
%findpeaks(b)
plot(t,b);

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Best Answer

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MATLAB: Square wave

MATLAB: Amplitude of square wave

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