20-11-2012, 04:40 PM
FOURIER TRANSFORM:
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Abstract
The periodic signal can be represented in form of an infinite series using the fouriesr series
It can represented periodic signal in frequency domain the line spectra, which contains the amplitude and phase spectrum
These specrtrum are discrete in nature as shown in fig . the spectrum is in the form of vertical lines that are present only at ± f_o and its integral multiple frequencies i.e ± 2f_o, 3±f_o etc
DIAGRAM page no 1-57