Diseño de Filtros IIR de Fase Lineal con Respuesta en Magnitud Plana usando Filtros Todopolo con Coeficientes Complejos
2009; National Polytechnic Institute; Volume: 10; Issue: 004 Linguagem: Inglês
ISSN
2007-9737
AutoresGordana Jovanovic Dolecek, Alfonso Fernández Vázquez,
Tópico(s)BIM and Construction Integration
ResumoTHIS PAPER PRESENTS A NEW METHOD FOR THE DESIGN OF LINEAR PHASE IIR FILTERS WITH FLAT MAGNITUDE RESPONSE. THE METHOD IS BASED ON THE DESIGN OF FLAT DIGITAL ALLPOLE FILTERS WITH COMPLEX COEFFICIENTS. DEPENDING ON THE PARITY OF THE ALLPOLE FILTER ORDER THE RESULTING IIR FILTER HAVE EITHER REAL OR COMPLEX COEFFICIENTS. THE PARAMETERS OF THE DESIGN ARE THE SAME AS IN TRADITIONAL IIR FILTER DESIGN, I.E., PASSBAND AND STOPBAND FREQUENCIES, ©P AND ©S, PASSBAND DROOP AP, AND STOPBAND ATTENUATION AS. SEVERAL DESIGN EXAMPLES ARE PROVIDED TO ILLUSTRATE THE METHOD. IN ADDITION, A DESIGN OF LINEAR PHASE MODIFIED TWO-BAND IIR FILTER BANKS AND A DESIGN OF STABLE IIR FILTER WITH AN IMPROVED GROUP DELAY ARE PRESENTED AS TWO APPLICATIONS OF THE PROPOSED METHOD
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