Title :
Application of fractional delay filters to tune the centre frequency location of single-band sigma-delta modulators
Author :
Al-Janabi, Mohammed ; Kale, Izzet ; Morling, Richard C S
Author_Institution :
Dept. of Electron. Syst., Westminster Univ., London, UK
Abstract :
This paper presents a novel technique for the design of narrow-band sigma-delta modulators with an embedded tunable centre frequency mechanism. This method demonstrates that the use of sum filters combined with a fractional delayer provide the flexibility of tuning the noise shaping band for any desired variable centre frequency input signal
Keywords :
circuit tuning; delay filters; sigma-delta modulation; centre frequency tuning; fractional delay filter; noise shaping; single-band sigma-delta modulator; sum filter; 1f noise; Band pass filters; Delay; Delta-sigma modulation; Finite impulse response filter; Frequency; IIR filters; Noise shaping; Signal resolution; Topology;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867238
