TY - JOUR
T1 - Low-power analog integrated circuits for wireless ECG acquisition systems
AU - Tsai, Tsung Heng
AU - Hong, Jia Hua
AU - Wang, Liang Hung
AU - Lee, Shuenn Yuh
N1 - Funding Information:
Manuscript received October 7, 2011; revised January 21, 2012; accepted February 2, 2012. Date of publication February 24, 2012; date of current version September 20, 2012. This work was supported by the Chip Implementation Center, National Science Council, Taiwan, under Grant 100-EC-17-A-01-S1-040, Grant NSC100–2220–E–194–002, Grant NSC100–2220–E– 194–003, and Grant NSC100-2628-E-194-003.
PY - 2012
Y1 - 2012
N2 - This paper presents low-power analog ICs for wireless ECG acquisition systems. Considering the power-efficient communication in the body sensor network, the required low-power analog ICs are developed for a healthcare system through miniaturization and system integration. To acquire the ECG signal, a low-power analog front-end system, including an ECG signal acquisition board, an on-chip low-pass filter, and an on-chip successive-approximation analog-to-digital converter for portable ECG detection devices is presented. A quadrature CMOS voltage-controlled oscillator and a 2.4 GHz direct-conversion transmitter with a power amplifier and upconversion mixer are also developed to transmit the ECG signal through wireless communication. In the receiver, a 2.4 GHz fully integrated CMOS RF front end with a low-noise amplifier, differential power splitter, and quadrature mixer based on current-reused folded architecture is proposed. The circuits have been implemented to meet the specifications of the IEEE 802.15.4 2.4 GHz standard. The low-power ICs of the wireless ECG acquisition systems have been fabricated using a $0.18 \mu$m Taiwan Semiconductor Manufacturing Company (TSMC) CMOS standard process. The measured results on the human body reveal that ECG signals can be acquired effectively by the proposed low-power analog front-end ICs.
AB - This paper presents low-power analog ICs for wireless ECG acquisition systems. Considering the power-efficient communication in the body sensor network, the required low-power analog ICs are developed for a healthcare system through miniaturization and system integration. To acquire the ECG signal, a low-power analog front-end system, including an ECG signal acquisition board, an on-chip low-pass filter, and an on-chip successive-approximation analog-to-digital converter for portable ECG detection devices is presented. A quadrature CMOS voltage-controlled oscillator and a 2.4 GHz direct-conversion transmitter with a power amplifier and upconversion mixer are also developed to transmit the ECG signal through wireless communication. In the receiver, a 2.4 GHz fully integrated CMOS RF front end with a low-noise amplifier, differential power splitter, and quadrature mixer based on current-reused folded architecture is proposed. The circuits have been implemented to meet the specifications of the IEEE 802.15.4 2.4 GHz standard. The low-power ICs of the wireless ECG acquisition systems have been fabricated using a $0.18 \mu$m Taiwan Semiconductor Manufacturing Company (TSMC) CMOS standard process. The measured results on the human body reveal that ECG signals can be acquired effectively by the proposed low-power analog front-end ICs.
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U2 - 10.1109/TITB.2012.2188412
DO - 10.1109/TITB.2012.2188412
M3 - Article
C2 - 22374371
AN - SCOPUS:84866599499
SN - 2168-2194
VL - 16
SP - 907
EP - 917
JO - IEEE Journal of Biomedical and Health Informatics
JF - IEEE Journal of Biomedical and Health Informatics
IS - 5
M1 - 6157624
ER -
