Cellular pipeline digital filters

This paper describes an efficient method for the implementation of digital filters with special-purpose hardware. The second-order section is realized by applying the canonic form algorithm in conjunction with two´s complement serial arithmetic. The pipeline implementation was used for high-speed performance. The objectives were to obtain a cascaded cellular structure with small circuit complexity and well suited for practical I.s.i. realization. The derived cellular filter is a functionally complete second-order section, that is, it provides the arithmetic operations, the delay requirements and the rounding using only one control signal. Also, it is expandable and permits flexible filter design. Higher-order digital filters can be obtained with repeated use of the proposed second-order section.