Optimal infinite impulse response (IIR) filters for sigma-delta demodulator circuits

Author

Abeysekera, Saman S. ; Zang, Zhuquan

Author_Institution

Telecommun. Res. Inst., Curtin Univ. of Technol., Perth, WA, Australia

Volume

1

fYear

1996

Firstpage

95

Abstract

The design of optimal IIR filters that can be used in Σ-Δ demodulator circuits is presented. Because of its simplicity, IIR architecture is well suited to VLSI implementation over the FIR architecture. The optimal IIR filter structure design described is based on the Laguerre series expansion of a rational transfer function. Simulation results indicate that the Laguerre filter approach is more efficient than a straight-forward implementation of IIR filters

Keywords

IIR filters; VLSI; circuit optimisation; demodulation; demodulators; filtering theory; series (mathematics); sigma-delta modulation; stochastic processes; IIR architecture; Laguerre filter; Laguerre series expansion; infinite impulse response filters; optimal IIR filters; rational transfer function; sigma-delta demodulator circuits; simulation results; Circuits; Demodulation; Equations; Finite impulse response filter; Frequency; IIR filters; Low pass filters; Low-frequency noise; Quantization; Very large scale integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 1996., 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-2912-0

Type

conf

DOI

10.1109/ICSIGP.1996.566981

Filename

566981