Design of low-frequency low-pass filters for biomedical applications

Chun Lung Hsu; Mean Horn Ho; Yu Kuan Wu; Ting Hsuan Chen

doi:10.1109/APCCAS.2006.342101

Design of low-frequency low-pass filters for biomedical applications

Chun Lung Hsu, Mean Horn Ho, Yu Kuan Wu, Ting Hsuan Chen

Department of Electrical Engineering

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

31 Scopus citations

Abstract

This paper presents the design method of very low-frequency current-mode low-pass filters for biomedical applications. The double-output operational transconductance amplifiers and grounded capacitors (DO-OTA-Cs) are used to realize the proposed low-frequency low-pass filters. The theory focuses mainly on establishing a relationship between the cascaded DO-OTA-Cs and the multiple-loop feedback connections, which make the design formulas. For the implementation of large time constants of the proposed low-pass filters, both linearized DO-OTAs with reduced transconductance and impedance scaler scheme for grounded capacitors are employed. Physical chip design of a leapfrog low-frequency low-pass filter was fabricated by using TSMC 0.35-um 2P4M CMOS process. With an active area of 1240 um × 490 um and working at 1.5 V, the circuit dissipates about 96.5 nW and the -3 dB frequency is around 3.8 Hz. Also, the measurement results are presented to verify the theoretical analysis.

Original language	English
Title of host publication	APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
Pages	690-695
Number of pages	6
DOIs	https://doi.org/10.1109/APCCAS.2006.342101
State	Published - 2006
Event	APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems - , Singapore Duration: 4 Dec 2006 → 6 Dec 2006

Publication series

Name	IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Conference

Conference	APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems
Country/Territory	Singapore
Period	4/12/06 → 6/12/06

Keywords

Current-mode
DO-OTA-C
Low-frequency
Low-pass filter

Access to Document

10.1109/APCCAS.2006.342101

Cite this

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title = "Design of low-frequency low-pass filters for biomedical applications",

abstract = "This paper presents the design method of very low-frequency current-mode low-pass filters for biomedical applications. The double-output operational transconductance amplifiers and grounded capacitors (DO-OTA-Cs) are used to realize the proposed low-frequency low-pass filters. The theory focuses mainly on establishing a relationship between the cascaded DO-OTA-Cs and the multiple-loop feedback connections, which make the design formulas. For the implementation of large time constants of the proposed low-pass filters, both linearized DO-OTAs with reduced transconductance and impedance scaler scheme for grounded capacitors are employed. Physical chip design of a leapfrog low-frequency low-pass filter was fabricated by using TSMC 0.35-um 2P4M CMOS process. With an active area of 1240 um × 490 um and working at 1.5 V, the circuit dissipates about 96.5 nW and the -3 dB frequency is around 3.8 Hz. Also, the measurement results are presented to verify the theoretical analysis.",

keywords = "Current-mode, DO-OTA-C, Low-frequency, Low-pass filter",

author = "Hsu, {Chun Lung} and Ho, {Mean Horn} and Wu, {Yu Kuan} and Chen, {Ting Hsuan}",

year = "2006",

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pages = "690--695",

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note = "APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems ; Conference date: 04-12-2006 Through 06-12-2006",

}

Hsu, CL, Ho, MH, Wu, YK & Chen, TH 2006, Design of low-frequency low-pass filters for biomedical applications. in APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems., 4145487, IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, pp. 690-695, APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems, Singapore, 4/12/06. https://doi.org/10.1109/APCCAS.2006.342101

Design of low-frequency low-pass filters for biomedical applications. / Hsu, Chun Lung; Ho, Mean Horn; Wu, Yu Kuan et al.
APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems. 2006. p. 690-695 4145487 (IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS).

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

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AU - Ho, Mean Horn

AU - Wu, Yu Kuan

AU - Chen, Ting Hsuan

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N2 - This paper presents the design method of very low-frequency current-mode low-pass filters for biomedical applications. The double-output operational transconductance amplifiers and grounded capacitors (DO-OTA-Cs) are used to realize the proposed low-frequency low-pass filters. The theory focuses mainly on establishing a relationship between the cascaded DO-OTA-Cs and the multiple-loop feedback connections, which make the design formulas. For the implementation of large time constants of the proposed low-pass filters, both linearized DO-OTAs with reduced transconductance and impedance scaler scheme for grounded capacitors are employed. Physical chip design of a leapfrog low-frequency low-pass filter was fabricated by using TSMC 0.35-um 2P4M CMOS process. With an active area of 1240 um × 490 um and working at 1.5 V, the circuit dissipates about 96.5 nW and the -3 dB frequency is around 3.8 Hz. Also, the measurement results are presented to verify the theoretical analysis.

AB - This paper presents the design method of very low-frequency current-mode low-pass filters for biomedical applications. The double-output operational transconductance amplifiers and grounded capacitors (DO-OTA-Cs) are used to realize the proposed low-frequency low-pass filters. The theory focuses mainly on establishing a relationship between the cascaded DO-OTA-Cs and the multiple-loop feedback connections, which make the design formulas. For the implementation of large time constants of the proposed low-pass filters, both linearized DO-OTAs with reduced transconductance and impedance scaler scheme for grounded capacitors are employed. Physical chip design of a leapfrog low-frequency low-pass filter was fabricated by using TSMC 0.35-um 2P4M CMOS process. With an active area of 1240 um × 490 um and working at 1.5 V, the circuit dissipates about 96.5 nW and the -3 dB frequency is around 3.8 Hz. Also, the measurement results are presented to verify the theoretical analysis.

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Design of low-frequency low-pass filters for biomedical applications

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Keywords

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