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A Comparative Study of the electrodes gels’Electrical Properties in the Measurement Issues of Intrabody Communication

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Journal of Beijing Institute of Technology 2022年第1期31卷 71-80页

作者： Fengjie Lin Ziliang Wei Jiejie Yang Yangrong Wen Yueming Gao Sio Hang Pun Mang I Vai Min Du College of Physics and Information Engineering Key Laboratory of Medical Instrumentation&Pharmaceutical Technology of Fujian ProvinceFuzhou UniversityFuzhou 350108China State Key Laboratory of Analog and Mixed-Signal VLSI University of MacaoTaipaMO 999078China

Intrabody communication(IBC)technology is becoming progressively more standard-ized due to its low power consumption and high security features incorporated into the third phys-ical layer of the IEEE 802.15.6 *** then,there are still many challenges in normalizing the measurement issues of IBC.A major concern that should not be overlooked is the electrodes in the IBC,especially the popular use of gel *** the channel measurements,gel electrodes are commonly employed to improve the signal-to-noise ratio and prevent electrodes from falling *** this paper,a comparative study of the electrical properties of gel was investigated during the measurement of human channel characteristics and to clarify the differences of ***,the basis of electrostatic field pole plate measurements and electromagnetic theory were introduced to interpretate how the relative permittivity and conductivity of different gels will influence the meas-urement *** the in vivo experiments with different gel or dry electrodes were performed to compare the differences induced by the *** results indicate that the influence of the gel on the human channel measurement is mainly concentrated below 400 kHz(the attenuation is re-duced by 16.7 dB on average),and the stability of the permittivity and conductivity of the gel has a direct impact on the stability of its measurement of the human *** result may provide a meaningful reference for the standardization of electrode usage in IBC.

关键词： intrabody communication channel characteristic measurement gel electrodes permit-tivity conductivity

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