On Amplitude and Frequency/Phase Modulation
on 20.10.2011 at 09:22 by Michele Zaffalon on Blog of Michele Zaffalon
I always had difficulties in understanding frequency modulation (FM) and its frequency spectrum. Even for the pure tone modulation, the FM spectrum consists of an infi nite number of sidebands whose signs change from one sideband to the next one and whose amplitudes are given by the horrible Bessel functions. I have a pictorial representation of AM/FM that helped me understand the sidebands.