A dual-mode low-distortion sigma-delta modulator with relaxing comparator accuracy

被引：0
|
作者：
Chio, Kin-Sang [1 ]
Seng-Pan, U.
Martins, R. P.
机构：
[1] Univ Macau, FST, Analog & Mixed Signal VLSI Lab, Macau, Peoples R China
[2] Chipidea Microelect Macau Ltd, Macau, Peoples R China
来源：
2006 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-11, PROCEEDINGS | 2006年
关键词：
D O I：
10.1109/ISCAS.2006.1692979
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A dual-mode singie-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.
引用
收藏
页码：1892 / 1895
页数：4
相关论文
共 50 条
  • [1] A MASH sigma-delta modulator with low-distortion architecture
    Chiang, JS
    Chen, HL
    ESA'03: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON EMBEDDED SYSTEMS AND APPLICATIONS, 2003, : 243 - 247
  • [2] A low power dual-mode sigma-delta modulator for GSM/WCDMA receivers
    Lee, Inhee
    Chae, Youngcheol
    Han, Gunhee
    2007 14TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-4, 2007, : 1151 - 1154
  • [3] Dual-mode sigma-delta modulator for wideband receiver applications
    Chiang, JS
    Chou, PC
    Chang, TH
    PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I: ANALOG CIRCUITS AND SIGNAL PROCESSING, 2003, : 997 - 1000
  • [4] A low power sigma-delta modulator for dual-mode wide-band receiver
    Hsin-Liang Chen
    Yi-Tsung Li
    Jen-Shiun Chiang
    Analog Integrated Circuits and Signal Processing, 2012, 71 : 179 - 185
  • [5] A low power sigma-delta modulator for dual-mode wide-band receiver
    Chen, Hsin-Liang
    Li, Yi-Tsung
    Chiang, Jen-Shiun
    ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2012, 71 (02) : 179 - 185
  • [6] A third-order sigma-delta modulator for dual-mode receivers
    Rusu, A
    Tenhunen, H
    PROCEEDINGS OF THE 46TH IEEE INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS & SYSTEMS, VOLS 1-3, 2003, : 68 - 71
  • [7] A low-distortion and swing-suppression sigma-delta modulator with extended dynamic range
    Chiang, JS
    Chang, TH
    Chou, PC
    2002 IEEE ASIA-PACIFIC CONFERENCE ON ASIC PROCEEDINGS, 2002, : 9 - 12
  • [8] Wideband low-distortion sigma-delta ADC for WLAN
    Jose, Babita R.
    Mythili, P.
    Mathew, Jimson
    Pradhan, D. K.
    2007 6TH INTERNATIONAL CONFERENCE ON INFORMATION, COMMUNICATIONS & SIGNAL PROCESSING, VOLS 1-4, 2007, : 991 - +
  • [9] The design of a low-distortion sigma-delta ADC for WLAN standards
    Rusu, A
    González, DRD
    Ismail, M
    Tenhunen, H
    ISSCS 2005: International Symposium on Signals, Circuits and Systems, Vols 1 and 2, Proceedings, 2005, : 151 - 154
  • [10] A novel wideband low-distortion cascaded sigma-delta ADC
    Chiang, JS
    Chang, TH
    Chou, PC
    2002 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL II, PROCEEDINGS, 2002, : 636 - 639
12345