Naslov
Analog Frontend for ECG/EMG Capacitive Electrodes

Autori
Cindrić, Dino ; Stanešić, Antonio ; Cifrek, Mario

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
2021 44th International Convention on Information, Communication and Electronic Technology (MIPRO) / Skala, Karolj - : Institute of Electrical and Electronics Engineers (IEEE), 2021, 392-395

Skup
44th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO 2021)

Mjesto i datum
Opatija, Hrvatska, 27.09.2021. - 01.10.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Capacitive sensing , analog frontend , ECG , EMG , non-contact

Sažetak
In this paper, a complete analog frontend for ECG/EMG signal acquisition through non-contact capacitive electrodes is designed. The main part of the analog signal acquisition chain is a low noise, low input bias current preamplifier, which was designed in both bootstrapped and transimpedance amplifier configurations. The preamplifier is followed by the cascade of active 2nd order high-pass filter with a 20 dB gain and 4th order active low-pass Sallen-Key filter using Butterworth approximation and 40 dB gain. The effects of coupling capacitance on system noise and gain-frequency response for both preamplifier topologies are investigated. The simulated input- referred noise, with a coupling capacitance value equal to 100 pF, for both preamplifier topologies has the value of 2.9 μVRMS . The gain-frequency response of bootstrapped preamplifier achieved greater resilience to variation of coupling capacitance value compared to transimpedance amplifier configuration, especially for lower values of coupling capacitance.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Informacijske i komunikacijske znanosti, Biotehnologija u biomedicini (prirodno područje, biomedicina i zdravstvo, biotehničko područje)

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