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A dual-mode low-distortion sigma-delta modulator with relaxing comparator accuracy
Chio K.-S.3; Seng-Pan U.3; Martins R.P.3
2006-12-01
Conference NameIEEE International Symposium on Circuits and Systems
Source PublicationProceedings - IEEE International Symposium on Circuits and Systems
Pages1892-1895
Conference DateMAY 21-24, 2006
Conference PlaceKos, GREECE
Abstract

A dual-mode single-loop multi-bit (3 bits) sigma-delta modulator (SDM) with reduced number of op-amps is proposed for satisfying the GSM/WCDMA standard. Such architecture is based in a simplified analog structure that not only features low distortion but also provides an aggressive and significantly enlarged noise shaping bandwidth with low over-sampling ratio (OSR). In addition, the resolution of comparators in the quantizer is relaxed to reduce the power consumption. Simulations in system- and transistor-level simulations prove a dynamic range of 88dB & 60dB in GSM & WCDMA respectively. © 2006 IEEE.

DOI10.1109/ISCAS.2006.1692979
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Hardware & Architecture ; Engineering, Electrical & Electronic
WOS IDWOS:000245413502080
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Chipidea Microelectronics (Macau) Ltd
2.Instituto Superior Técnico
3.Universidade de Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Chio K.-S.,Seng-Pan U.,Martins R.P.. A dual-mode low-distortion sigma-delta modulator with relaxing comparator accuracy[C],2006:1892-1895.
APA Chio K.-S.,Seng-Pan U.,&Martins R.P..(2006).A dual-mode low-distortion sigma-delta modulator with relaxing comparator accuracy.Proceedings - IEEE International Symposium on Circuits and Systems,1892-1895.
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