Continuous-time sigma-delta modulator design for wireless biomedical sensing applications

Yi Yang; Changzhi Li; David M. Binkley

doi:10.1109/WAMICON.2010.5461869

Continuous-time sigma-delta modulator design for wireless biomedical sensing applications

Yi Yang, Changzhi Li, David M. Binkley

Electrical and Computer Engineering

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

6 Scopus citations

Abstract

This paper discusses the use of continuous-time sigma-delta modulators for ADCs in wireless biomedical sensing applications. The advantages of the proposed continuous-time sigma-delta modulators include the fact that it eliminates the need for an anti-aliasing filter in front of the ADC because of its intrinsic anti-alias filtering property. Additionally, the use of weak inversion and a low flicker noise structure minimizes power consumption and low frequency flicker noise. Finally, the decimation filter used in ordinary sigma-delta ADCs to attenuate high-frequency noise is eliminated because the biomedical sensor analyzes the periodogram in software, thus significantly reducing the cost and power consumption. A design example illustrating these advantages is presented in this paper.

Original language	English
Title of host publication	2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010
DOIs	https://doi.org/10.1109/WAMICON.2010.5461869
State	Published - 2010
Event	2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010 - Melbourne, FL, United States Duration: Apr 12 2010 → Apr 13 2010

Publication series

Name	2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010

Conference

Conference	2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010
Country	United States
City	Melbourne, FL
Period	04/12/10 → 04/13/10

Keywords

Analog-to-digital converter
Biomedical applications
Flicker noise
Non-contact
Sigma-delta modulator
Wireless sensor

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Cite this

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title = "Continuous-time sigma-delta modulator design for wireless biomedical sensing applications",

abstract = "This paper discusses the use of continuous-time sigma-delta modulators for ADCs in wireless biomedical sensing applications. The advantages of the proposed continuous-time sigma-delta modulators include the fact that it eliminates the need for an anti-aliasing filter in front of the ADC because of its intrinsic anti-alias filtering property. Additionally, the use of weak inversion and a low flicker noise structure minimizes power consumption and low frequency flicker noise. Finally, the decimation filter used in ordinary sigma-delta ADCs to attenuate high-frequency noise is eliminated because the biomedical sensor analyzes the periodogram in software, thus significantly reducing the cost and power consumption. A design example illustrating these advantages is presented in this paper.",

keywords = "Analog-to-digital converter, Biomedical applications, Flicker noise, Non-contact, Sigma-delta modulator, Wireless sensor",

author = "Yi Yang and Changzhi Li and Binkley, {David M.}",

year = "2010",

doi = "10.1109/WAMICON.2010.5461869",

language = "English",

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Yang, Y, Li, C & Binkley, DM 2010, Continuous-time sigma-delta modulator design for wireless biomedical sensing applications. in 2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010., 5461869, 2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010, 2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010, Melbourne, FL, United States, 04/12/10. https://doi.org/10.1109/WAMICON.2010.5461869

Continuous-time sigma-delta modulator design for wireless biomedical sensing applications. / Yang, Yi; Li, Changzhi; Binkley, David M.

2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010. 2010. 5461869 (2010 IEEE 11th Annual Wireless and Microwave Technology Conference, WAMICON 2010).

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

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AU - Yang, Yi

AU - Li, Changzhi

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N2 - This paper discusses the use of continuous-time sigma-delta modulators for ADCs in wireless biomedical sensing applications. The advantages of the proposed continuous-time sigma-delta modulators include the fact that it eliminates the need for an anti-aliasing filter in front of the ADC because of its intrinsic anti-alias filtering property. Additionally, the use of weak inversion and a low flicker noise structure minimizes power consumption and low frequency flicker noise. Finally, the decimation filter used in ordinary sigma-delta ADCs to attenuate high-frequency noise is eliminated because the biomedical sensor analyzes the periodogram in software, thus significantly reducing the cost and power consumption. A design example illustrating these advantages is presented in this paper.

AB - This paper discusses the use of continuous-time sigma-delta modulators for ADCs in wireless biomedical sensing applications. The advantages of the proposed continuous-time sigma-delta modulators include the fact that it eliminates the need for an anti-aliasing filter in front of the ADC because of its intrinsic anti-alias filtering property. Additionally, the use of weak inversion and a low flicker noise structure minimizes power consumption and low frequency flicker noise. Finally, the decimation filter used in ordinary sigma-delta ADCs to attenuate high-frequency noise is eliminated because the biomedical sensor analyzes the periodogram in software, thus significantly reducing the cost and power consumption. A design example illustrating these advantages is presented in this paper.

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KW - Biomedical applications

KW - Flicker noise

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