A Novel Single-Multiplier Implementation of IIR and FIR Digital Filters Using Tri-State Logic
James A. Howard, Sanjit K. Mitra, Bahram Mahbod · IEEE Transactions on Instrumentation and Measurement · 1979
A new implementation of digital FIR and IIR filters which takes advantage of the availability of tri-state logic for modularity and extensibility is outlined. The filter is a time-based design and uses a single multiplier. The sequence of operations for a second-order IIR filter with such an implementation is illustrated with the aid of a block diagram.