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Impedance Spectroscopy Based on Linear System Identification

Impedance spectroscopy is a commonly used measurement technique for electrical characterization of a sample under test over a wide frequency range. Most measurement methods employ a sine wave excitation generator, which implies a point-by-point frequency sweep and a complex readout architecture. Thi...

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Published in:	IEEE transactions on biomedical circuits and systems 2019-04, Vol.13 (2), p.396-402
Main Authors:	Ivanisevic, Nikola, Rodriguez, Saul, Rusu, Ana
Format:	Article
Language:	English
Subjects:	adaptive filtering Analog to digital conversion Analog to digital converters ARX Biomedical measurement Broadband Calibration Complexity Cost function Dielectric Spectroscopy Electrical Engineering Electrical properties Elektro- och systemteknik Frequency ranges Humans IIR filter Impedance Impedance measurement Impedance spectroscopy Mathematical model Measurement methods Measurement techniques Prototypes pseudo-random waveform Rangefinding Signal Processing, Computer-Assisted Sine waves Skin Physiological Phenomena Spectroscopic analysis Spectroscopy Spectrum analysis System identification Time Factors Voltage amplifiers Wave excitation
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container_title	IEEE transactions on biomedical circuits and systems
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creator	Ivanisevic, Nikola Rodriguez, Saul Rusu, Ana
description	Impedance spectroscopy is a commonly used measurement technique for electrical characterization of a sample under test over a wide frequency range. Most measurement methods employ a sine wave excitation generator, which implies a point-by-point frequency sweep and a complex readout architecture. This paper presents a fast, wideband, measurement method for impedance spectroscopy based on linear system identification. The main advantage of the proposed method is the low hardware complexity, which consists of a three-level pulse waveform, an inverting voltage amplifier, and a general purpose analog-to-digital converter (ADC). A proof-of-concept prototype, which is implemented with off-the-shelf components, achieves an estimation fit of approximately 96%. The prototype operation is validated electrically using known RC component values and tested in real application conditions.
doi_str_mv	10.1109/TBCAS.2019.2900584
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subjects	adaptive filtering Analog to digital conversion Analog to digital converters ARX Biomedical measurement Broadband Calibration Complexity Cost function Dielectric Spectroscopy Electrical Engineering Electrical properties Elektro- och systemteknik Frequency ranges Humans IIR filter Impedance Impedance measurement Impedance spectroscopy Mathematical model Measurement methods Measurement techniques Prototypes pseudo-random waveform Rangefinding Signal Processing, Computer-Assisted Sine waves Skin Physiological Phenomena Spectroscopic analysis Spectroscopy Spectrum analysis System identification Time Factors Voltage amplifiers Wave excitation
title	Impedance Spectroscopy Based on Linear System Identification
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