sinc function
Let's see... In frequency domain, the sinc function with the main lobe at zero is Sinc(W), The sinc function with the main lobe somewhere else , let's say Wo, is Sinc(W-Wo). Using the frequency shift property of the Fourier transform we have:
x(t) ---F--> F(w)
Exp(Jwot)*x(t) ----F--->F(w - wo)
So
G(t) ---F---> Sinc(W)
Exp(Jwot)*G(t) ---F---> Sinc( W -wo)
Where ---F--> represents Fourier transform and G(t) is the function representing a pulse. That's all.