3 Fourier Series Representation of Periodic Signals 3.3 Fourier Series Representation of Continuous-time Periodic Signals 3.3. 1 Linear Combinations of harmonically Related Complex exponentials (1) General Form The set of harmonically related complex exponentials ΦA(t) ik(2T/T) k=0±1±2 Fundamental period: T( common period3 Fourier Series Representation of Periodic Signals 3.3 Fourier Series Representation of Continuous-time Periodic Signals (1) General Form k (t) = e j k0 t = e j k(2 /T )t , k = 0,1,2 3.3.1 Linear Combinations of Harmonically Related Complex Exponentials The set of harmonically related complex exponentials: Fundamental period: T ( common period )