Can anyone please help me out to obtain frequency Modulated wave from a Phase Modulator using pmmod function in matlab?

Can anyone please help me out to obtain frequency Modulated wave from a Phase Modulator using pmmod function in matlab?

Answer 1

[Walter Roberson]

fs = 50; 
t = (0:2*fs+1)'/fs;
x = sin(2*pi*t) + sin(4*pi*t);

fc = 10; 
phasedev = pi/2;

tx = pmmod(x,fc,fs,phasedev);

subplot(2,1,1)
plot(t,x); title('original')
subplot(2,1,2)
plot(t, tx); title('modulated')