Example #3: a square pulse in the time-domain SIn w X(w) X(o) 2T xO /1TT1 Note the inverse relation between the two widths Uncertainty principle Useful facts about ctft's a(tdt Example above:/ a(t)dt=2T1=X( XGw) Ex. above: 2(0 X(ju) (Area of the triangle)Example #3: A square pulse in the time-domain Useful facts about CTFT’s Note the inverse relation between the two widths ⇒ Uncertainty principle