LEICI   25638
INSTITUTO DE INVESTIGACIONES EN ELECTRONICA, CONTROL Y PROCESAMIENTO DE SE√ĎALES
Unidad Ejecutora - UE
artículos
Título:
High gain driven right leg circuit for dry electrode systems
Autor/es:
ENRIQUE SPINELLI; FEDERICO GUERRERO
Revista:
MEDICAL ENGINEERING & PHYSICS
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2017 vol. 39 p. 117 - 122
ISSN:
1350-4533
Resumen:
This paper presents an improved driven right leg (DRL) circuit compensation together with a practical implementation. The proposed design allows to increase common mode voltage attenuation compared with the widely used dominant pole compensation while maintaining the same proven stability margin and design criteria, and requiring only a modification of its passive feedback network. A sample imple- mentation of the proposed DRL was obtained estimating the values of interference model parameters for a dry electrode measurement system. A dominant pole compensated DRL with the same stability margin was also implemented in order to experimentally validate the proposed design against this established alternative. Measurements were conducted under both controlled and uncontrolled interference condi- tions. The proposed compensation experimentally demonstrated achieving a better reduction of power line harmonics, with a peak comparative improvement of around 18 dB at 50 Hz.