Extracting the Single-Dispersion Fractional Cole–Cole Bioimpedance Model Based on Low-Pass Filter Technique

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dc.contributor.authorPrommee, Pipat
dc.contributor.authorChimnoy, Jirat
dc.contributor.authorWongprommoon, Natapong
dc.contributor.authorKarawanich, Khunanon
dc.date.accessioned2026-08-06T10:48:50Z
dc.date.available2026-08-06T10:48:50Z
dc.date.issued2025-01-01
dc.description.abstractThis article presents a simple approach to extracting the parameters of the single-dispersion Cole–Cole bioimpedance model. The main advantage of the proposed technique is that it is low-cost but accurate in identifying the bioimpedance models. The Cole–Cole model is simplified as a fractional low-pass filter (LPF) using a few electronic components. Based on a low-component count, the circuit can be realized using only a single operational amplifier (OPAMP), two resistors, and two potentiometers (POTs). The proposed technique can achieve a minimal error compared to the theory, ensuring accuracy. The Cole–Cole model parameter values can be extracted by measuring the filter magnitude and phase responses. The LPF topology inherently provides a low-noise output signal. Experimental results using different fruits are carried out to verify the method and compared with measurements from a commercial impedance analyzer to confirm the accuracy of the results, with the maximum errors of R<inf>0</inf>,R<inf>∞</inf>, α, and C<inf>α</inf> being 0.94%, 2.41%, 0.85%, and 1.52%, respectively. The proposed new efficient technique provides excellent results in extracting the Cole–Cole parameters and agrees with the theoretical expectations.
dc.identifier.citationIEEE Transactions on Instrumentation and Measurement, 74, 2025
dc.identifier.doi10.1109/TIM.2025.3643088
dc.identifier.issn00189456
dc.identifier.other2-s2.0-105024775816
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16362
dc.sourceIEEE Transactions on Instrumentation and Measurement
dc.subjectBioimpedance
dc.subjectCole–Cole model
dc.subjectfractional-order
dc.subjectlow-cost
dc.subjectlow-pass filter (LPF)
dc.titleExtracting the Single-Dispersion Fractional Cole–Cole Bioimpedance Model Based on Low-Pass Filter Technique
dc.typeArticle

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