Resumo

JOVANOVIC-DOLECEK, G  e  MITRA, S.K. Symbolic sensitivity analysis of the new second-order IIR structure. Ing. invest. y tecnol. [online]. 2008, vol.9, n.1, pp.59-65. ISSN 2594-0732.

An high-order IIR (In fi nite im pulse response) filter is usually realized in the form of a cas cade or in the form of a parallel connection of second-order sections. Consequently, it is of in ter est to study properties of a second-order digital filter structures. To this end, in this paper we propose a new second-order IIR filter structure. The effect of multiplier coefficient quantization of the proposed structure is analyzed using the MATLAB-based symbolic analysis. The sensitivity matrix of the structure is computed in a symbolic form and its pole sensitivities are compared with that of other known structures.

Palavras-chave : IIR filter; second- order section; quantization; sensitivity analysis; sensitiv ty matrix; pole sensitivity.