Elementary Signals: Step, Impulse, Ramp, Exponential, Sinusoid

Inside this lesson

Define and interpret the unit step u(t), unit impulse δ(t), and unit ramp r(t)
Write the mathematical expressions for real exponential and sinusoidal signals
Evaluate elementary signals at specific time instants
Recognize the sifting property of the impulse and its role in later convolution

Unlock the full Electrical Engineering bundle

Every paid lesson across both the Electromagnetics & Signals and Circuits & Digital Systems courses — one purchase, both courses.
Interactive simulators for field lines, Faraday's law, convolution, and more.

Get the bundle →

One-time purchase — see options on the next page.

or unlock everything with all-access

Not ready yet? See the free preview lessons across the course.

⚖️

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.