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Symbolic sensitivity analysis of the new second–order IIR structure

Author(s): G. Jovanovic–Dolecek | S.K. Mitra

Journal: Ingeniería Investigación y Tecnologia
ISSN 1405-7743

Volume: 9;
Issue: 1;
Start page: 59;
Date: 2008;
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Keywords: IIR filter | second– order section | quantization | sensitivity analysis | sensitiv ty matrix | pole sensitivity

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.

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