Title :
Low-sensitivity digital-filter structures which are amenable to error-spectrum shaping
Author :
Diniz, Paulo S R ; Antoniou, Andreas
fDate :
10/1/1985 12:00:00 AM
Abstract :
A systematic and exhaustive procedure is used to generate a class of new low-sensitivity second-order digital-filter structures which are amenable to error-spectrum shaping (ESS). Collectively, these structures can realize any stable second-order transfer function. For every transfer function, a choice of at least two structures is available but, through a sensitivity analysis, the optimum one can always be identified. The paper concludes with sensitivity and roundoff-noise comparisons which show that the new structures are usually superior relative to corresponding direct canonic structures and also relative to the state-space section-optimal structure.
Keywords :
Digital filters; Recursive digital filter wordlength effects; Digital filters; Electronic switching systems; Hardware; Multi-stage noise shaping; Noise reduction; Noise shaping; Output feedback; Quantization; Sensitivity analysis; Transfer functions;
Journal_Title :
Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TCS.1985.1085621