Estimating Cole-Impedance Parameters from Limited Frequency-Band Impedance Measurements

被引：2
|
作者：
Freeborn, Todd J. [1 ]
Critcher, Shelby [1 ]
机构：
[1] Univ Alabama, Dept Elec Comp Eng, Tuscaloosa, AL 35487 USA
来源：
2021 IEEE 12TH LATIN AMERICA SYMPOSIUM ON CIRCUITS AND SYSTEM (LASCAS) | 2021年
基金：
美国国家卫生研究院;
关键词：
SYSTEM;
D O I：
10.1109/LASCAS51355.2021.9459167
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Particle-swarm optimization is applied to estimate the parameters of 4 different Cole-impedance models using impedance measurements limited to frequencies within 1 kHz to 1 MHz, representative of typical ranges for bioimpedance applications. The accuracy of extracted parameters are compared for cases with N = 201, 25, and 5 datapoints collected using a Keysight E4990A impedance analyzer and N = 8 collected using a MAX30001 integrated circuit. The Cole-impedance estimations using the 201 and 25 frequency datasets show < 0.5% relative error compared to the ideal values. Estimations using 5 and 8 frequency datasets do show significant deviations when measurements do not capture plateauing impedance regions at low and high frequency.
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页数：4
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