Title :
Analysis and Implement of ECG Front-End Signal Processing Circuit
Author :
Li Yongjun ; Xu Xiaorong ; Liu Yu ; Tian Yafang
Author_Institution :
Sch. of Phys. & Electron., Henan Univ., Kaifeng, China
Abstract :
In order to reduce the noise disturbance to ECG signals, ECG front-end signal processing method is proposed in this paper. In this method, the RFI filter is a bridge type differential low-pass filter. The input amplifier is high precision instrument amplifier AD8220 which has JFET input stage characteristic, the low-pass filter is a five order Bessel filter which has the most flat amplitude and phase response, and the right leg driving circuit is precision operational amplifier OP2177 which has low input bias current. The method is characterized with simpleness, easy integration, good stability and high precision. It is significant for the future electrocardiogram instrument.
Keywords :
JFET integrated circuits; driver circuits; electrocardiography; field effect analogue integrated circuits; instrumentation amplifiers; low-pass filters; medical signal processing; operational amplifiers; radiofrequency filters; radiofrequency interference; signal denoising; ECG front end signal processing circuit; JFET input stage characteristic; RFI filter; bridge type differential low-pass filter; electrocardiogram instrument; five order Bessel filter; input amplifier; noise disturbance reduction; precision instrument amplifier AD8220; precision operational amplifier OP2177; right leg driving circuit; Band pass filters; Bandwidth; Electrocardiography; Instruments; Low pass filters; Noise; ECG; Five Order Beisaier Filter; Instrument Amplifier;
Conference_Titel :
Information Technology, Computer Engineering and Management Sciences (ICM), 2011 International Conference on
Conference_Location :
Nanjing, Jiangsu
Print_ISBN :
978-1-4577-1419-1
DOI :
10.1109/ICM.2011.131
