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Help with fourier transform!!! URGENT?
Need help in finding the fourier transform of
f(t)= (1/sqrt T) sinc[W(t-nT)]
Need the solutions as soon as possible...
2 Answers
- David FLv 710 years agoFavorite Answer
If you can calculate 2^n pairs of [t, f(t)], where n is a positive integer, then you can use microsoft excel to produce a fast fourier transform, if you have enabled the engineering analysis toolpack.
Graph the output, and see if you can spot a trend. Derive an expression by inspection. Test your hypothesis. Due to aliasing, you might want to ignore the second half of the output, as it will be a mirror image of the first half.
This is the quick way if you can't find an algebraic solution.
- HankmLv 710 years ago
The sinc term just causes the fourier transform to be repeated to infinity at a spacing of
the sampling frequency
