Low-sensitivity direct-form IIR SC filters with improved phase linearity

Author

Pereira, Jacqueline S. ; Petraglia, Antonio

Author_Institution

Dept. of Electr. Eng., Univ. Federal do Rio de Janeiro, Brazil

Volume

3

fYear

2000

fDate

2000

Firstpage

169

Abstract

This paper presents a novel approach for the design of infinite impulse response (IIR) switched-capacitor (SC) filters, based on the optimum allocation of poles and zeros of a transfer function. This approach is aimed at the reduction of sensitivity in the passband and improved phase linearity. Comparisons with classical filter designs are made. An illustrative design example of a proposed low-pass IIR SC filter structure is presented along with experimental results obtained from a prototype filter built and tested in the laboratory

Keywords

IIR filters; low-pass filters; network synthesis; pole assignment; sensitivity analysis; switched capacitor filters; transfer functions; zero assignment; IIR switched-capacitor filters; direct-form IIR SC filters; infinite impulse response; low-pass SC filter structure; low-sensitivity SC filters; optimum allocation; phase linearity; poles and zeros; transfer function; Attenuation; Capacitance; Chebyshev approximation; Frequency; IIR filters; Iterative algorithms; Linearity; Passband; Poles and zeros; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on

Conference_Location

Geneva

Print_ISBN

0-7803-5482-6

Type

conf

DOI

10.1109/ISCAS.2000.856023

Filename

856023