Advanced search
1 file | 419.77 KB

Quadrature mismatch shaping with a complex, data directed swapper

Stijn Reekmans (UGent) , Benoit Catteau (UGent) , Pieter Rombouts (UGent) and Ludo Weyten (UGent)
Author
Organization
Abstract
Quadrature bandpass (QBP) Sigma Delta ADCs require a feedback path for both the I and the Q part of the complex feedback signal. A complex DAC could give this feedback with near-perfect I/Q balance. Still, the mismatch between the unit elements of the complex DAC introduces mismatch noise that should be shaped out of the signal band with dynamic element-matching (DEM) techniques. To select the unit DAC elements of the complex multibit DAC, the well-known data directed swapper is generalized towards a complex structure and the necessary constraints for its correct functioning are derived. Additionally, a hardware efficient structure is presented: the reduced butterfly shuffler. Here, some of the QBP swapper cells are replaced by bandpass (BP) swapper cells. Also, great attention is paid to the interconnection pattern of the data directed swapper to prevent instability.

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 419.77 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Reekmans, Stijn, Benoit Catteau, Pieter Rombouts, and Ludo Weyten. 2006. “Quadrature Mismatch Shaping with a Complex, Data Directed Swapper.” In 2006 13TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3, 46–49. New York, NY, USA: IEEE.
APA
Reekmans, S., Catteau, B., Rombouts, P., & Weyten, L. (2006). Quadrature mismatch shaping with a complex, data directed swapper. 2006 13TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3 (pp. 46–49). Presented at the 13th IEEE International Conference on Electronics, Circuits and Systems, New York, NY, USA: IEEE.
Vancouver
1.
Reekmans S, Catteau B, Rombouts P, Weyten L. Quadrature mismatch shaping with a complex, data directed swapper. 2006 13TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3. New York, NY, USA: IEEE; 2006. p. 46–9.
MLA
Reekmans, Stijn, Benoit Catteau, Pieter Rombouts, et al. “Quadrature Mismatch Shaping with a Complex, Data Directed Swapper.” 2006 13TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3. New York, NY, USA: IEEE, 2006. 46–49. Print.
@inproceedings{411687,
  abstract     = {Quadrature bandpass (QBP) Sigma Delta ADCs require a feedback path for both the I and the Q part of the complex feedback signal. A complex DAC could give this feedback with near-perfect I/Q balance. Still, the mismatch between the unit elements of the complex DAC introduces mismatch noise that should be shaped out of the signal band with dynamic element-matching (DEM) techniques. To select the unit DAC elements of the complex multibit DAC, the well-known data directed swapper is generalized towards a complex structure and the necessary constraints for its correct functioning are derived. Additionally, a hardware efficient structure is presented: the reduced butterfly shuffler. Here, some of the QBP swapper cells are replaced by bandpass (BP) swapper cells. Also, great attention is paid to the interconnection pattern of the data directed swapper to prevent instability.},
  author       = {Reekmans, Stijn and Catteau, Benoit and Rombouts, Pieter and Weyten, Ludo},
  booktitle    = {2006 13TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3},
  isbn         = {978-1-4244-0394-3},
  language     = {eng},
  location     = {Nice, France},
  pages        = {46--49},
  publisher    = {IEEE},
  title        = {Quadrature mismatch shaping with a complex, data directed swapper},
  year         = {2006},
}

Web of Science
Times cited: