I want to use a single sine gen and then phase shift it by 90. please help in this... Is it possible ? Please Help ?

 i want to use a single sine gen and then phase shift it by 90.
 please help in this...

And also i wanted to know how to design all pass filter

[Adam]

A 90-degree phase shifted sine wave is just a cosine wave. So if that is literally what you want to do then just create a cosine instead of a sine.

[L K]

but I have a sine wave gen and i will be giving a sine input to one block and phase shifted input to other block... Basically its just 1 sine wave block from which I am taking two signals to 2 blocks i.e one phase shifted and other just a plain sine wave

Answer 1

[KSSV]

t = linspace(0,2*pi) ;
x = sin(pi/4*t) ;
plot(t,x,'r')
hold on
x = sin(pi/4*t+pi/2) ;  % phase shift by pi/2, which is same as cos 
plot(t,x,'b')

[L K]

Thank u Sir.

[raju b]

Thank ....you.....sir....

Answer 2

[Pedro Manuel Carro Parafita]

You can use a hilbert transform and then take just the imaginary part of it.

x_shifted=imag(hilbert(x));