Multi-output passive digital filters

In this paper, an overview of some of our previous work on multi-output passive digital filters and a family of four multi-output passive and stable 2^nd-order digital filters derived from passive digital 2-ports are presented. The coefficients of each of these four filters can be computed by direct mapping with the coefficients of a bilinear transformed digital transfer function, derived according to a given set of filter specifications from an analog filter handbook. Under finite wordlength arithmetic operations, each of these digital filters is free from zero-input oscillation and constant-input oscillation by applying magnitude truncation at each of the two outputs of its constituent digital 2-ports.