Current Source for Multifrequency Broadband Electrical Bioimpedance Spectroscopy Systems: A Novel Approach

Seoane, Fernando,1976-School of Engineering, University College of Borås (författare)

Current Source for Multifrequency Broadband Electrical Bioimpedance Spectroscopy Systems : A Novel Approach

QC 20120202
New research and clinical applications of broadband electrical bioimpedance spectroscopy arise; increasing the upper limit frequency used in the measurement systems. The current source, an essential block of an electrical bioimpedance impedance analyzer, must have a large-enough output impedance at any frequency of operation to keep the output current constant regardless of the value of working load. In this paper a novel approach to increase the output impedance of a common voltage controlled current source is proposed. The circuit is analyzed, implemented and tested. The results, remarking the significant effect of the circuit parasitic capacitances, show a clear increment of the output impedance, but smaller than the originally expected

TEKNIK OCH TEKNOLOGIER Medicinteknik Medicinsk laboratorie- och mätteknik hsv//swe
ENGINEERING AND TECHNOLOGY Medical Engineering Medical Laboratory and Measurements Technologies hsv//eng
active networks
bioelectric potentials
biomedical measurement
electric impedance imaging
electric impedance measurement
power supplies to apparatus
circuit parasitic capacitance effect
common voltage controlled current source
electrical bioimpedance impedance analyzer
measurement system
multifrequency broadband electrical bioimpedance spectroscopy
output impedance
working load

Bragós, RamonDepartment of Electronic Engineering, Technical University of Catalonia (författare)
Lindecrantz, Kaj,1951-School of Engineering, University College of Borås(Swepub:kth)u1kuwno6 (författare)
School of Engineering, University College of BoråsDepartment of Electronic Engineering, Technical University of Catalonia (creator_code:org_t)

Ingår i:2006 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-15, s. 5121-512514244003259781424400324

Av författaren/redakt...: Seoane, Fernando ...; Bragós, Ramon; Lindecrantz, Kaj ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Medicinteknik; och Medicinsk labora ...

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