@ARTICLE{Borys_Andrzej_On_2020, author={Borys, Andrzej}, volume={vol. 66}, number={No 2}, journal={International Journal of Electronics and Telecommunications}, pages={355-368}, howpublished={online}, year={2020}, publisher={Polish Academy of Sciences Committee of Electronics and Telecommunications}, abstract={This paper is devoted to some problems that appear in derivations of the discrete time Fourier transform from a formula for its continuous time counterpart for transformation from the time into the frequency domain as well as to those regarding transformation in the inverse direction. In particular, the latter ones remained so far an unresolved problem. It is solved for the first time here. Many detailed explanations accompanying the solution found are presented. Finally, it is also worth noting that our derivations do not exploit any of such sophisticated mathematical tools as the so-called Dirac delta and Dirac comb.}, type={Article}, title={On Derivation of Discrete Time Fourier Transform from Its Continuous Counterpart}, URL={http://journals.pan.pl/Content/115212/PDF/48_2020.pdf}, doi={10.24425/ijet.2020.131885}, keywords={sampling of signals, relation between discrete and continuous time Fourier transforms}, }