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|Title:||Variable centre frequency bandpass sigma-delta modulator|
|Citation:||Smart structures, devices, and systems : 16-18 December 2002, Melbourne, Australia / Erol C. Harvey, Derek Abbott, Vijay K. Varadan (eds.) : pp. 197-204|
|Series/Report no.:||Proceedings of SPIE--the International Society for Optical Engineering ; 4935.|
|Conference Name:||International Symposium on Smart Materials, Nano- and Micro-Smart Systems (2002 : Melbourne, Australia)|
|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.|
|Appears in Collections:||Environment Institute publications|
Electrical and Electronic Engineering publications
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