Optimization of multi-ring sensing electrode set

Monica Kaufer, Leonard Rasquinha, Peter Tarjan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


The potential generated in a set of concentric ring electrodes by a moving dipole layer was simulated by a linear finite element model. The wavefront was represented by rectangular charged elements with the charge concentrated at the center of each element. The model was refined to reflect the solid angle described by the corners of the finite element and the center of the element on the ring of interest. This corrects the potential while the dipole layer is near the center of the sensing electrodes. The model confirms that the far-field dependence of both bipolar and tripolar rings is a function of r-4, where r is the radius of the ring. As expected, the tripolar configuration is more spatially sensitive with a smaller amplitude. When signal amplitude is more important than spatial specificity then the bipolar configuration appears superior.

Original languageEnglish (US)
Title of host publicationBiomedical Engineering Perspectives
Subtitle of host publicationHealth Care Technologies for the 1990's and Beyond
PublisherPubl by IEEE
Number of pages2
Editionpt 2
ISBN (Print)0879425598
StatePublished - Dec 1 1990
EventProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Philadelphia, PA, USA
Duration: Nov 1 1990Nov 4 1990

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 2
ISSN (Print)0589-1019


OtherProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityPhiladelphia, PA, USA

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics


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