XVI. Transient response in frequency modulation
D.A. Bell · The London Edinburgh and Dublin Philosophical Magazine and Journal of Science · 1944
Summary Square-wave modulation is assumed to be applied both to an amplitude-modulated and a frequency-modulated system, in each of which the band-width is limited by a single resonant circuit, tuned to the carrier frequency, and the responses are computed. It is found that F.M. gives a better transient response than A.M. The response of a single tuned circuit to sinusoidal frequency modulation, of such high frequency of modulation that the side-bands fall on the skirt of the circuit resonance characteristic, is also examined and it is shown that severe harmonic distortion is introduced.