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Type: Conference paper
Title: Variable centre frequency bandpass sigma-delta modulator
Author: Zhu, Y.
Al-Sarawi, S.
Liebelt, M.
Citation: Smart structures, devices, and systems : 16-18 December 2002, Melbourne, Australia / Erol C. Harvey, Derek Abbott, Vijay K. Varadan (eds.) : pp. 197-204
Publisher: SPIE
Publisher Place: CDROM
Issue Date: 2002
Series/Report no.: Proceedings of SPIE--the International Society for Optical Engineering ; 4935.
ISBN: 0-8194-4730-7
ISSN: 0277-786X
Conference Name: International Symposium on Smart Materials, Nano- and Micro-Smart Systems (2002 : Melbourne, Australia)
Statement of
Yingbo Zhu, Said F. Al-Sarawi, and Michael Liebelt
Abstract: In wideband surveillance and digital radio systems, there is a need to sweep the centre fequency of the data converter to detect a broadcast i nthe band of interest. Hence there is a need to design data converters with variable centre frequencies. Sigma-Delta modulators with programmable center frequency are chosen for this purpose. In this paper new resonators for a variable centre frequency bandpass Sigma-Delta modulator are presented. The new resonators have a centre frequency that extends from very low frequency up to half the sampling frequency. Simulation results of a fourth order discrete-time bandpass modulator employing the new resonator are presented using MATLAB and SPICE.
Description: © 2003 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
RMID: 0020022544
DOI: 10.1117/12.469667
Appears in Collections:Environment Institute publications
Electrical and Electronic Engineering publications

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