A CMOS sinusoidal signal generator based on mixed-time processing for electrical bioimpedance spectroscopy supporting beta dispersion range

  • Soon Jae Kweon
  • , Sung Hun Jo
  • , Jeong Ho Park
  • , Hyung Joun Yoo

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

10 Scopus citations

Abstract

A CMOS sinusoidal signal generator based on discrete-time (DT) and continuous-time (CT) processing is proposed for electrical bioimpedance spectroscopy supporting beta dispersion range of tissues. Differential stepwise sine-like signals with oversampling ratio (OSR) of 16 are used for input signals. DT filters with OSR=16 are used to attenuate close-in harmonics of these input signals, and a CT transconductance-C low-pass filter is used to attenuate less suppressed high-order harmonics under the DT processing of OSR=16. This proposed signal generator designed in a 0.25μm CMOS process supports frequency range from 1 kHz to 2.048 MHz. The spurious-free dynamic range more than 65.7 dB and the total harmonic distortion less than 51.6m% were achieved for about 550-mVpp output amplitude.

Original languageEnglish
Title of host publication2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages91-94
Number of pages4
ISBN (Electronic)9781509015702
DOIs
StatePublished - 3 Jan 2017
Event2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016 - Jeju, Korea, Republic of
Duration: 25 Oct 201628 Oct 2016

Publication series

Name2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016

Conference

Conference2016 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2016
Country/TerritoryKorea, Republic of
CityJeju
Period25/10/1628/10/16

Keywords

  • continuous time
  • discrete time
  • electrical bioimpedance spectroscopy
  • filter
  • SFDR
  • sinusoidal signal
  • THD

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