A reprogrammable filter bank using CCD discrete analog signal processing
J. Mattern, D. R. Lampe · 1975
A multichannel filter using a 32-stage CCD analog shift register (ASR), will be described. The filter uses a recursive two-pole, one-zero network. The center frequencies, bandwidths and gains, are independently programmed using four quadrant multiplying digital-to-analog converters.