专利名称：Adaptive feed forward system
发明人：DENNISTON; WILLIAM B.,HERTZ; ROBERT F.申请号：US52468074申请日：19741118公开号：US3922617A公开日：19751125
摘要：A feed forward system for reducing the distortion products from a device suchas an amplifier, wherein a sample of the device input signal is subtractively combined witha sample of the device output signal to produce a sample of the distortion products. Thedistortion sample is adjusted in phase and amplitude and subtractively combined with thedevice output to produce a distortion-reduced system output. First and second pilotsignals, applied to the device input and output respectively, are detected in the sampleof the distortion products and in the system output to produce control signals whichadjust the phase and amplitude of the input signal sample and the distortion sample toprovide an adaptive system which automatically compensates for uncontrolled variationsin the system components. A portion of the distortion sample produced by the feedforward process is fed back to the device input by way of a negative feedback circuit toreduce the signal handling capacity required of components such as an auxiliary amplifierused in processing the distortion sample.
申请人：CUTLER-HAMMER, INC.
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