Analise comparativa de algumas estruturas de filtros digitais de segunda ordem imunes a ciclos limite
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Data
1994-08-19
Autores
Simmer, Ana Cristina Staut
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Universidade Federal do Espírito Santo
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This work is a comparative study of the relative output roundoff noise variance performance for some second-order state-space structures, as a function of the filter bandwidth. The addressed second-order structures are used as building blocks for realizing lowpass, highpass, bandpass and bandreject digital filters. In this sense, this study complements a recent one, which just investigated the lowpass filter case. In both studies only narrow-band digital filters are discussed, regarding the well known good performance of the state-space structures in those cases. In order to compare the output roundoff noise performance for all spectra, new firstorder spectral transformations, derived from the well known transformations due to Constantinides, are developed, for varying the filter bandwidth of a parallel-form prototype filter. All this effort is justified by the importance of knowing the performance of the structures which are suitable for a desired application, what represents a significative contribution to the problem of designing digital filters.
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SIMMER, Ana Cristina Staut. Análise comparativa de algumas estruturas de filtros digitais de segunda ordem imunes a ciclos limite. 1994. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal do Espírito Santo, Centro Tecnológico, Vitória, 1994.