FRC - A METHOD FOR EXTENDING THE RESOLUTION OF NYQUIST RATE CONVERTERS USING OVERSAMPLING

Authors
HARJANI R LEE TA
Citation
R. Harjani et Ta. Lee, FRC - A METHOD FOR EXTENDING THE RESOLUTION OF NYQUIST RATE CONVERTERS USING OVERSAMPLING, IEEE transactions on circuits and systems. 2, Analog and digital signal processing, 45(4), 1998, pp. 482-494
Citations number
17
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on circuits and systems. 2, Analog and digital signal processing → ACNP
ISSN journal
10577130
Volume
45
Issue
4
Year of publication
1998
Pages
482 - 494
Database
ISI
SICI code
1057-7130(1998)45:4<482:F-AMFE>2.0.ZU;2-9
Abstract
Nyquist rate converters have traditionally been used for low to modera te resolution data acquisition applications. In this paper, we describ e a feedforward residue compensation (FRC) technique to extend the res olution of such converters using an oversampling modulator loop. Close d-form analytical expressions are developed to provide insight into th e operation and limits on the resolution of such converters. Simulatio n results are used to verify the operation and confirm the limitations of this technique.