Infinite impulse response filters

Details Infinite impulse response filters Infinite impulse response filters

H - Electricity

03

H

328/0.5

H03H 17/04 (2006.01)

Patent

CA 1265588

ABSTRACT OF THE DISCLOSURE An infinite impulse response (IIR) filter is operative to filter an input signal that comprises a sequence of digital words spaced in time by an interval T. The filter includes delay means that delays the input signal by successive increments of time equal to T so as to cause the production of a series of relatively delayed signals in which each signal is delayed by T with respect to the previous signal in the series. IIR processing units receive respective groups of the series of signals, the groups being offset with respect to one another by one word. The units are operative during each of plural successive clock periods equal to 2T to process respective sets of words obtained from the respective groups of the series of signals so as to produce two output words. A multiplexer combines each two output words produced during each clock period equal to 2T to constitute Q filtered output signal comprising a sequence of output words spaced In time by the interval T.

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