Excess Loop Delay Compensation Technique For Tunable Bandpass Delta Sigma Modulators

被引：6
|
作者：
Afifi, M. [1 ]
Keller, M. [1 ]
Manoli, Y. [1 ]
Ortmanns, M. [2 ]
机构：
[1] Univ Freiburg, IMTEK, Chair Microelect, Freiburg, Germany
[2] Univ Ulm, Inst Microelect, Ulm, Germany
来源：
2009 52ND IEEE INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1 AND 2 | 2009年
关键词：
D O I：
10.1109/MWSCAS.2009.5236078
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Excess loop delay is one of the most critical problems in continuous-time delta-sigma modulators as it leads to SNR degradation and even system instability. This paper discusses the effect of excess loop delay on a tunable continuous-time bandpass modulator, both analytically and by simulations. Furthermore, it suggests a simple compensation technique for the excess loop delay that preserves the modulator stability with a delay of one period. It is shown that the compensation achieves almost the ideal SNR of the modulator.
引用
收藏
页码：365 / +
页数：2
相关论文
共 50 条
  • [41] Design of continuous time bandpass Delta Sigma modulators in CMOS
    Peluso, V
    Steyaert, M
    Sansen, W
    ANALOG CIRCUIT DESIGN: MOST RF CIRCUITS, SIGMA-DELTA CONVERTERS AND TRANSLINEAR CIRCUITS, 1996, : 171 - 191
  • [42] Automatic filter calibration for bandpass delta-sigma modulators
    Hu, Jingjing
    Hegt, J. A.
    van Roermund, A. H. M.
    Ouzounov, Sotir F.
    2015 IEEE 58TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2015,
  • [43] Design of bandpass delta sigma modulators using differential evolution
    Stubberud, Peter
    Lull, Greg
    PROCEEDINGS OF THE EIGHTH IASTED INTERNATIONAL CONFERENCE ON SIGNAL AND IMAGE PROCESSING, 2006, : 376 - +
  • [44] Mismatch cancellation for complex bandpass sigma-delta modulators
    Yu, L
    Snelgrove, M
    40TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1 AND 2, 1998, : 814 - 817
  • [45] Analysis of timing jitter in bandpass sigma-delta modulators
    Tao, H
    Tóth, L
    Khoury, JM
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1999, 46 (08): : 991 - 1001
  • [46] Effect of Mismatched Loop Delay in Continuous-Time Complex Sigma-Delta Modulators
    Kim, Song-Bok
    Werth, Tobias D.
    Joeres, Stefan
    Wunderlich, Ralf
    Heinen, Stefan
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2008, 55 (10) : 996 - 1000
  • [47] Optimal parameters for single loop Delta Sigma modulators
    Peluso, V
    Marques, A
    Steyaert, M
    Sansen, W
    ISCAS '97 - PROCEEDINGS OF 1997 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS I - IV: CIRCUITS AND SYSTEMS IN THE INFORMATION AGE, 1997, : 57 - 60
  • [48] A Continuous-Time ΔΣ Modulator with a Digital Technique for Excess Loop Delay Compensation
    Zhang, Yi
    Chen, Chia-Hung
    He, Tao
    Meng, Xin
    Temes, Gabor C.
    2014 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), 2014, : 934 - 937
  • [49] Loop delay compensation in bandpass continuous-time yea modulators without additional feedback coefficients
    Aboushady, H
    Louërat, MM
    2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 1, PROCEEDINGS, 2004, : 1124 - 1127
  • [50] System-level design aspects of a DAC calibration technique for bandpass delta-sigma modulators
    Gagnon, Ghyslain
    MacEachern, Leonard
    2007 IEEE NORTH-EAST WORKSHOP ON CIRCUITS AND SYSTEMS, 2007, : 301 - 304
12345