A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes

Soon Jae Kweon; Seongheon Shin; Jeong Ho Park; Ji Hoon Suh; Hyung Joun Yoo

doi:10.1109/BioCAS.2016.7833787

A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes

Soon Jae Kweon, Seongheon Shin, Jeong Ho Park, Ji Hoon Suh, Hyung Joun Yoo

School of Information, Communications and Electronics Engineering

Korea Advanced Institute of Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

13 Scopus citations

Abstract

A CMOS integrated low-power polar demodulator for electrical bioimpedance spectroscopy is proposed. This polar demodulator extracts magnitude and phase of tissue's impedance. Two adaptive self-sampling schemes, namely zero-time sampling (ZTS) and peak-time sampling (PTS), are proposed to efficiently extract the magnitude of impedance. Since ZTS scheme reuses clock signals used in the XOR-based phase-extracting circuit, low-power consumption is achieved. When ZTS scheme is used, magnitude error increases as frequency of the injected sinusoidal signal increases. Instead of ZTS scheme, PTS scheme is used when the signal above 100 kHz is injected. Targeting 1-kHz to 2.048-MHz frequency range, the proposed demodulator designed in a 0.25-im CMOS process consumes 10.3 mW at its maximum with magnitude and phase errors of 1.0% and 1.3°, respectively.

Original language	English
Title of host publication	Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	284-287
Number of pages	4
ISBN (Electronic)	9781509029594
DOIs	https://doi.org/10.1109/BioCAS.2016.7833787
State	Published - 2016
Event	12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016 - Shanghai, China Duration: 17 Oct 2016 → 19 Oct 2016

Publication series

Name	Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016

Conference

Conference	12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016
Country/Territory	China
City	Shanghai
Period	17/10/16 → 19/10/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

demodulator
electrical bioimpedance spectroscopy
impedance
magnitude
phase
polar
sampling

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10.1109/BioCAS.2016.7833787

Cite this

Kweon, S. J., Shin, S., Park, J. H., Suh, J. H., & Yoo, H. J. (2016). A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes. In Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016 (pp. 284-287). Article 7833787 (Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS.2016.7833787

Kweon, Soon Jae ; Shin, Seongheon ; Park, Jeong Ho et al. / A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes. Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 284-287 (Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016).

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title = "A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes",

abstract = "A CMOS integrated low-power polar demodulator for electrical bioimpedance spectroscopy is proposed. This polar demodulator extracts magnitude and phase of tissue's impedance. Two adaptive self-sampling schemes, namely zero-time sampling (ZTS) and peak-time sampling (PTS), are proposed to efficiently extract the magnitude of impedance. Since ZTS scheme reuses clock signals used in the XOR-based phase-extracting circuit, low-power consumption is achieved. When ZTS scheme is used, magnitude error increases as frequency of the injected sinusoidal signal increases. Instead of ZTS scheme, PTS scheme is used when the signal above 100 kHz is injected. Targeting 1-kHz to 2.048-MHz frequency range, the proposed demodulator designed in a 0.25-im CMOS process consumes 10.3 mW at its maximum with magnitude and phase errors of 1.0% and 1.3°, respectively.",

keywords = "demodulator, electrical bioimpedance spectroscopy, impedance, magnitude, phase, polar, sampling",

author = "Kweon, {Soon Jae} and Seongheon Shin and Park, {Jeong Ho} and Suh, {Ji Hoon} and Yoo, {Hyung Joun}",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016 ; Conference date: 17-10-2016 Through 19-10-2016",

year = "2016",

doi = "10.1109/BioCAS.2016.7833787",

language = "English",

series = "Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016",

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Kweon, SJ, Shin, S, Park, JH, Suh, JH & Yoo, HJ 2016, A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes. in Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016., 7833787, Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016, Institute of Electrical and Electronics Engineers Inc., pp. 284-287, 12th IEEE Biomedical Circuits and Systems Conference, BioCAS 2016, Shanghai, China, 17/10/16. https://doi.org/10.1109/BioCAS.2016.7833787

A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes. / Kweon, Soon Jae; Shin, Seongheon; Park, Jeong Ho et al.
Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 284-287 7833787 (Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes

AU - Kweon, Soon Jae

AU - Shin, Seongheon

AU - Park, Jeong Ho

AU - Suh, Ji Hoon

AU - Yoo, Hyung Joun

PY - 2016

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N2 - A CMOS integrated low-power polar demodulator for electrical bioimpedance spectroscopy is proposed. This polar demodulator extracts magnitude and phase of tissue's impedance. Two adaptive self-sampling schemes, namely zero-time sampling (ZTS) and peak-time sampling (PTS), are proposed to efficiently extract the magnitude of impedance. Since ZTS scheme reuses clock signals used in the XOR-based phase-extracting circuit, low-power consumption is achieved. When ZTS scheme is used, magnitude error increases as frequency of the injected sinusoidal signal increases. Instead of ZTS scheme, PTS scheme is used when the signal above 100 kHz is injected. Targeting 1-kHz to 2.048-MHz frequency range, the proposed demodulator designed in a 0.25-im CMOS process consumes 10.3 mW at its maximum with magnitude and phase errors of 1.0% and 1.3°, respectively.

AB - A CMOS integrated low-power polar demodulator for electrical bioimpedance spectroscopy is proposed. This polar demodulator extracts magnitude and phase of tissue's impedance. Two adaptive self-sampling schemes, namely zero-time sampling (ZTS) and peak-time sampling (PTS), are proposed to efficiently extract the magnitude of impedance. Since ZTS scheme reuses clock signals used in the XOR-based phase-extracting circuit, low-power consumption is achieved. When ZTS scheme is used, magnitude error increases as frequency of the injected sinusoidal signal increases. Instead of ZTS scheme, PTS scheme is used when the signal above 100 kHz is injected. Targeting 1-kHz to 2.048-MHz frequency range, the proposed demodulator designed in a 0.25-im CMOS process consumes 10.3 mW at its maximum with magnitude and phase errors of 1.0% and 1.3°, respectively.

KW - demodulator

KW - electrical bioimpedance spectroscopy

KW - impedance

KW - magnitude

KW - phase

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ER -

Kweon SJ, Shin S, Park JH, Suh JH, Yoo HJ. A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes. In Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016. Institute of Electrical and Electronics Engineers Inc. 2016. p. 284-287. 7833787. (Proceedings - 2016 IEEE Biomedical Circuits and Systems Conference, BioCAS 2016). doi: 10.1109/BioCAS.2016.7833787

A CMOS low-power polar demodulator for electrical bioimpedance spectroscopy using adaptive self-sampling schemes

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Keywords

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