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The frequency content of signals, which can be adaptively processed in real time, have typically been limited by A/D conversion rates and digital signal processor instruction speeds. By sampling averages rather than instantaneous values of signals formed from the predictor configuration, A/D sample rates and computational requirements can be significantly reduced. This paper describes a circuit which adaptively attenuates 90 MHz bandwidth signals with a 25 kHz sample rate using an analog programmable transversal filter (PTF). The dynamic range of the overall circuit exceeds that of the individual PTF.
Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on (Volume:1 )
Date of Conference: Oct. 30 1995-Nov. 1 1995