Title :
Bio-signal acquisition circuit with high signal-to-noise ratio for u-healthcare system
Author :
Ilku Nam ; Hongseok Kang ; Doo Hyung Woo
Author_Institution :
Dept. of Electron. Eng., Pusan Nat. Univ., Busan, South Korea
Abstract :
The testing of a monolithic bio-signal acquisition circuit with an analogue negative feedback loop for ubiquitous healthcare (u-healthcare) and the monitoring of physical activity is described. The large low-frequency signal is effectively rejected by the proposed circuit, allowing the dynamic range of the more valuable signals to be improved. The proposed circuit has been designed and fabricated using a 0.18 μm 1-poly 6-metal CMOS process. Using an analogue negative feedback loop with a dual-gain filter, the proposed method provides an average signal-to-noise ratio 8.1 dB higher than that of the conventional method.
Keywords :
CMOS integrated circuits; biomedical equipment; electrocardiography; electromyography; feedback; filtering theory; health care; medical signal detection; medical signal processing; monolithic integrated circuits; patient monitoring; ubiquitous computing; 1-poly6-metal CMOS process; DGF; SNR; analogue negative feedback loop; dual-gain filter; low-frequency signal; monolithic biosignal acquisition circuit; physical activity monitoring; signal-to-noise ratio; u-healthcare system; ubiquitous healthcare;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3088
