2024-03-29T08:40:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/831792016-02-17T15:58:17Zcom_10261_90com_10261_4col_10261_343
2013-10-03T09:10:15Z
urn:hdl:10261/83179
Design of a CMOS closed-loop system with applications to bio-impedance measurements
Yúfera, A.
Rueda, Adoración
Impedance measurements
Electrical bio-impedance
Electronic instrumentation
Biometric circuits
CMOS analog circuits
Sensory systems
This paper proposes a method for impedance measurements based on a closed-loop implementation of CMOS circuits. The proposed system has been conceived for alternate current excited systems, performing simultaneously driving and measuring functions, thanks to feedback. The system delivers magnitude and phase signals independently, which can be optimized separately, and can be applied to any kind of load (resistive and capacitive). Design specifications for CMOS circuit blocks and trade-offs for system accuracy and loop stability have been derived. Electrical simulation results obtained for several loads agree with the theory, enabling the proposed method to any impedance measurement problem, in special, to bio-setups including electrodes.
2013-10-03T09:10:15Z
2013-10-03T09:10:15Z
2010-04
artículo
Microelectronics Journal 41(4): 231-239 (2010)
0026-2692
http://hdl.handle.net/10261/83179
10.1016/j.mejo.2010.02.006
eng
http://dx.doi.org/10.1016/j.mejo.2010.02.006
closedAccess
Elsevier