Reduction by limiters of amplitude modulation in an amplitude- and frequency-modulated wave

A mathematical method is described for computing the effect of idealized limiters on an amplitude-and frequency-modulated wave of the form A sin thetas(t), where A may be a function of time. The output components of the limiter are shown to be of the form V2v+1(A) sin (2v+1)thetast and the dynamic characteristics V2v+1(A) are used to compute the residual amplitude modulation in the output. The effectiveness of such limiters is displayed in curves showing the ratio of residual amplitude-modulation index to the amplitude-modulation index in the original wave as a function of the applied voltage.