A low-voltage chopper-stabilized amplifier for fetal ECG monitoring with a 1.41 power efficiency factor

S Song, M Rooijakkers, P Harpe… - IEEE transactions on …, 2015 - ieeexplore.ieee.org
This paper presents a low-voltage current-reuse chopper-stabilized frontend amplifier for
fetal ECG monitoring. The proposed amplifier allows for individual tuning of the noise in …

A Tunable Gain and Bandwidth Low-Noise Amplifier with 1.44 NEF for EMG and EOG Biopotential Signal

R Vieira, F Näf, R Martins, N Horta, N Lourenço… - Electronics, 2023 - mdpi.com
This paper presents a low-noise inverter-based current-mode instrumentation amplifier with
tunable gain and bandwidth for electromyogram (EMG) and electrooculogram (EOG) …

An ECG chopper amplifier achieving 0.92 NEF and 0.85 PEF with AC-coupled inverter-stacking for noise efficiency enhancement

S Mondal, DA Hall - 2017 IEEE International Symposium on …, 2017 - ieeexplore.ieee.org
This paper presents an ultra-low power chopper-stabilized amplifier intended for portable or
implantable ECG applications. A new technique to fundamentally improve the noise …

A Sub-1muA Low-PowerLow-NoiseAmplifier with Tunable Gain and Bandwidth for EMG and EOG Biopotential Signals

R Vieira, R Martins, N Horta… - SMACD/PRIME 2021; …, 2021 - ieeexplore.ieee.org
This paper presents the design of a low-power low-noise amplifier for biomedical and
healthcare applications, focusing on electromyography and electrooculography. The signals …

Textile-integrated electronics for ambulatory pregnancy monitoring

M Perusquía-Hernández, W Chen, L Feijs - Advances in Smart Medical …, 2016 - Elsevier
Constant pregnancy monitoring is a promising alternative for reducing the numbers of
stillbirths and preterm deliveries due to false alarms. Telemonitoring systems can provide …

A Review and Perspective on Electrode Patch-Based Fetal ECG Monitoring ASIC

W Zhi, T Yi, Z Hong - 2021 IEEE 14th International Conference …, 2021 - ieeexplore.ieee.org
Wearable fetal electrocardiogram (FECG) monitoring systems continuously measure the
heart rate, the fetus's heart rate and the contractive pressure of pregnant women in a user …

Circuit design of portable ECG equipment based on LM124 operational amplifier

Z Liu - 2021 3rd International Conference on Intelligent …, 2021 - ieeexplore.ieee.org
In this work, a portable ECG signal amplification and processing circuit were designed
based on the lm124 chip. The circuit consists of a high CMRR measurement amplifier, a …

Background and State-of-the-Art

R Vieira, N Horta, N Lourenço, R Póvoa… - Tunable Low-Power …, 2021 - Springer
This chapter presents the background and the state-of-the-art in the broad field of low-noise
amplifiers, providing context to the developed LNA. The performance metrics considered in …

[图书][B] Tunable Low-Power Low-Noise Amplifier for Healthcare Applications

R Vieira, N Horta, N Lourenço, R Póvoa - 2021 - Springer
Amplifiers are fundamental to modern electronics having applications extended from analog
to mixed-signal circuits. Amplifiers are used in several electronic systems and signal chains; …

Current-Feedback Instrumentation Amplifier for Bio-Potential Signal Acquisition applications

N Girinath, C Visvesvaran - 2019 International Conference …, 2019 - ieeexplore.ieee.org
It is paramount to develop wearable devices for Human Machine Interface Applications that
can collect biopotential signals with high accuracy and without signal loss. Instrumentation …