Automatic filter calibration for bandpass delta-sigma modulators

Jingjing Hu, J. A. Hegt, A.H.M. van Roermund, Sotir F. Ouzounov

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

A bandpass delta-sigma modulator with a widely tunable center frequency range for direct digitization of IF or RF signals can be a key building block for highly digitized radio receivers. The performance of the bandpass modulator is highly dependent on the accuracy of the noise transfer function zero locations in the presence of process spread. An automatic calibration method is proposed to calibrate the noise transfer function zeros to their desired locations based on minimizing the variance of the decimated output bitstream of the modulator. The calibration does not need external test stimuli nor does it require complex hardware.

Original languageEnglish
Title of host publicationIEEE 58th International Midwest Symposium on Circuits and Systems
Subtitle of host publicationClimbing to New Heights, MWSCAS 2015 - Conference Proceedings
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)978-1-4673-6558-1
DOIs
Publication statusPublished - 28 Sep 2015
Event58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015 - Fort Collins, United States
Duration: 2 Aug 20155 Aug 2015

Conference

Conference58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015
CountryUnited States
CityFort Collins
Period2/08/155/08/15

Keywords

  • analog-to-digital converter
  • bandpass delta-sigma modulator
  • calibration
  • filter

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