Title :
IIR filtering on sigma-delta modulated signals
Author :
Johns, David A. ; Lewis, D.M.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Abstract :
A design methodology for realising IIR filters on sigma-delta modulated signals is proposed. It is shown that only 3N adders together with minor logic are required to implement an Nth order filter. This type of filtering should prove useful in VLSI technologies where interfaces to analogue signals are required.
Keywords :
VLSI; digital filters; IIR filtering; VLSI technologies; adders; design methodology; minor logic; sigma-delta modulated signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910194
