Band-limited angle modulation
G.B. Lockhart · Proceedings of the IEEE · 1973
An angle-modulated signal that is strictly band-limited, but subject to normal demodulation procedures, is shown to be a theoretical possibility. The method involves an iteration procedure followed by combined amplitude-phase modulation. The bandwidth of the modulated signal can be adjusted to achieve realistic frequency deviations. An example is presented for a sinusoidal modulating signal input.