MATLAB: How to plot a complex function in simulink

complexplotsimulink

how to plot a complex function on simulink scope?

You could plot the real and imaginary part separately using the scope block, or then plot them in the real-imaginary plane using XY Graph:

figure,plot(w,real(f)) hold on,plot(w,imag(f))

figure,plot(w,[real(x);imag(x)])

Sum of two sine signals is a real signal. So, its spectrum is symetrical around zero.

A block diagram that produces a "complex signal" is the following:

Two sine waves with appropriate phase difference, in order to become a sine and a cosine

Their settings are shown at the following figure: