1.Derivation of the CT Fourier Transform pai r 2.Examples of Fourier Transforms 3.Fourier Transforms of Periodic Signals 4.Properties of the CT Fourier Transform Fourier’s Derivation of the CT Fourier Trans form •x(t) -an aperiodic signal-view it as the lim it of a periodic signal as T→ ∞ •For a periodic signal, the harmonic compone nts are spaced ω0= 2π/T apart ... •As T→ ∞, ω0→0, and harmonic components are spaced closer and closer in frequency ⇓ Fourier series ______Fourier integral Ch4 Fourier Transform Topics: