Title :
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
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;
Conference_Titel :
Signal Processing, 1996., 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2912-0
DOI :
10.1109/ICSIGP.1996.566981
