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The Discrete-Time Fourier Transform
Inside this lesson
- Write the definition of the DTFT and identify its structural parallels to the continuous-time Fourier transform
- Explain why the DTFT is periodic with period 2π and connect this to the aliasing concept from the previous lesson
- Evaluate the DTFT of a simple exponential sequence using the geometric series
- Recognize the DTFT as a stepping stone toward the Z-transform covered in the next module
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Educational content covering topics typical of a first- and second-year electrical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real antenna, transmission-line, or signal-processing system design without review by a licensed professional engineer.