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

Volume

2

fYear

2011

fDate

24-25 Sept. 2011

Firstpage

309

Lastpage

312

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICM.2011.131

Filename

6113529