Variable centre frequency bandpass sigma-delta modulator
Date
2002
Authors
Zhu, Y.
Al-Sarawi, S.
Liebelt, M.
Editors
Harvey, E.
Abbott, D.
Varadan, V.
Abbott, D.
Varadan, V.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Smart structures, devices, and systems : 16-18 December 2002, Melbourne, Australia / Erol C. Harvey, Derek Abbott, Vijay K. Varadan (eds.) : pp. 197-204
Statement of Responsibility
Yingbo Zhu, Said F. Al-Sarawi, and Michael Liebelt
Conference Name
International Symposium on Smart Materials, Nano- and Micro-Smart Systems (2002 : Melbourne, Australia)
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.
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Description
© 2003 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.