Fourth-order discrete-time variable centre frequency bandpass sigma-delta modulator
- Zhu, Y.
- Al-Sarawi, S.
- Lim, C.
- Liebelt, M.
Publication date
January 2006
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
Copyright © 2006 IEEEA design for a variable centre frequency bandpass sigma-delta modulator is presented. The modulator is based on a tunable discrete-time resonator using only one control parameter. The noise transfer function of the modulator is controlled by a 4-bit digital signal, which provides nine different centre frequencies distributed between 0.1-0.4 normalized frequencies. The measurement results show a stable modulator at all centre frequenciesY. Zhu, S.F. Al-Sarawi, C. C. Lim, and M.J. Liebel
Add to ORKG