Suppression of low frequency effects of high frequency interference in bioelectrical recordings

Author

deJager, P.J.A. ; Peper, A. ; MettingVanRijn, A.C. ; Grimbergen, C.A.

Author_Institution

Med. Phys. Dept., Amsterdam Univ., Netherlands

Volume

1

fYear

1996

fDate

31 Oct-3 Nov 1996

Firstpage

26

Abstract

The nonlinear characteristics of the input stage of operational amplifiers are the cause of high frequency (HF) interference in low frequency bioelectric recordings. Low-pass filtering at the inputs of the amplifiers reduces the Common Mode Rejection Ratio of the instrumentation significantly and is therefore not a satisfying solution. A promising method for the suppression of the low frequency effects of HF interference is presented

Keywords

bioelectric potentials; biomedical electronics; interference (signal); interference suppression; medical signal processing; operational amplifiers; bioelectrical recordings; common mode rejection ratio; electrodiagnostics; high frequency interference; low frequency effects suppression; low-pass filtering; nonlinear characteristics; operational amplifier input stage; Bioelectric phenomena; Frequency; Hafnium; Immune system; Integrated circuit noise; Interference suppression; Low pass filters; Operational amplifiers; Signal design; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE

Conference_Location

Amsterdam

Print_ISBN

0-7803-3811-1

Type

conf

DOI

10.1109/IEMBS.1996.656829

Filename

656829