how to convert a gaussian low pass filter to a gaussian band pass filter

I designed a gaussian filter in Matlab with these values of sigma and mean:

sigma = 1.5040e-08;

u=0;

by usisng this line of code:

Gt = gaussmf(tt,[sigma u]);

the first element is the time axes of my signal.

Now the result is a low pass filter but I want a gaussian band pass filter, what should I do to convert my filter to a bandpass?

Answer 1

[2NOR_Kh]

I find the answer of this question and writing it here in case that anyone needs it in the future:

When we think of low pass or band pass in the frequency domain, a gaussian low pass filter must just pass the low frequency infomation and what about its counterpasrt in the bandpass? that will be a shift in frequency domain around the f0. Shift in frequency domain is a multiplication in time domain(e^(-jw0t)). I did this buy multiplying my low pass gaussian filter in cos(w0t).