All the carrier should have same carrier frequency(say 1000Hz). I have used repeating sequence for the triangle waveform generation and it is working. Which simulink block can I use for a phase shift of 90 degree? or any other solutions?
Use the Variable Time Delay block (from the Continuous library).
Feed your triangle waves into the first inputs and a amount of delay you want into the second. You have to convert 90° in second obviously.
I think you can also choose the phase when you create a waveform.
I tried implementing what you suggested, but the all the values till delay block is in play becomes zero.I want the triangular waves to be phase shifted and want the full waves throughout.
Hi Maulik,
Since the carrier has the same freq, I think you can use the matlab function sawtooth to generate the triangle signals, apply the dephase and generate a m-file block in this way:
T = 10*(1/50);
Fs = 1000;
dt = 1/Fs;
t = 0:dt:T-dt;
x = sawtooth(2*pi*50*t);
x2 = sawtooth(2*pi*50*t+pi/2);
x3 = sawtooth(2*pi*50*t+pi);
x4 = sawtooth(2*pi*50*t+3*pi/2);
plot(t,x); hold on;
plot(t,x2,'r')
plot(t,x3,'g')
plot(t,x4,'y')
Is there a command to plot a complete triangle instead of sawtooth(right triangle)?
it is the same function sawtooth(t,width) where width represents the position of the maximum between 0 and 2pi. 0.5 means an equilateral triangle
you can use triangle generator from the library of Control and Measurements/Pulse & Signal Generators.
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