Adaptive sinusoidal interference filter

摘要: The invention relates to an adaptive filtering system for cancelling one or more sinusoidal interference signal contained with a desired in incoming signal. A phase-locked loop is used track frequency and synthesize various synchronous in-phase/in-quadrature square wave signals. Each of these signals weighted accordance variations the amplitude phase are combined together so as deliver substantially free from any In case multiple correlated signals, instant gives steady state performance better than that well known Widrow-Hoff notch filter.