Results 51 to 60 of about 2,687 (171)

A Single‐Stage Differential Amplifier Using Organic Electrochemical Transistors

Advanced Electronic Materials, Volume 11, Issue 9, June 2025.
A three‐transistor differential amplifier using depletion‐mode organic electrochemical transistors is implemented that offers a common‐mode rejection ratio of up to ≈20 dB. Compared to a Wheatstone bridge amplifier, ECG recordings with this amplifier showed improved signal‐to‐noise ratio, gain, and power consumption.
Farnaz Fahimi Hanzaee, Ivan B. Dimov, Luke W. Gatecliff, Richard H. Bayford, George G. Malliaras, Andreas Demosthenous, Nick de N. Donaldson   +6 more
wiley   +1 more source

An Ultra High CMRR Low Voltage Low Power Fully Differential Current Operational Amplifier (COA)

Iranian Journal of Electrical and Electronic Engineering, 2015
this paper presents a novel fully differential (FD) ultra high common mode rejection ratio (CMRR) current operational amplifier (COA) with very low input impedance.
A. Roohavar, S. J. Azhari
doaj  

Heteroepitaxial (111) Diamond Quantum Sensors with Preferentially Aligned Nitrogen‐Vacancy Centers for an Electric Vehicle Battery Monitor

Advanced Quantum Technologies, Volume 8, Issue 4, April 2025.
(111) diamond sensor fabricated by heteroepitaxial chemical vapor deposition (CVD) process and adhered on top of an optical fiber and sensor holder with tilt correction mechanism to adjust the misorientation of the diamond sensor. Abstract A platform for heteroepitaxial (111) chemical vapor deposition (CVD) diamond quantum sensors with preferentially ...
Kenichi Kajiyama, Moriyoshi Haruyama, Yuji Hatano, Hiromitsu Kato, Masahiko Ogura, Toshiharu Makino, Hitoshi Noguchi, Takeharu Sekiguchi, Takayuki Iwasaki, Mutsuko Hatano   +9 more
wiley   +1 more source

Brain–computer interfaces in 2023–2024

Brain‐X, Volume 3, Issue 1, March 2025.
Research on invasive and non‐invasive brain–computer interfaces (BCIs) is developing rapidly, especially in the field of medicine. This article reviews BCI software, hardware, related neural mechanisms, and clinical applications. The principles of invasive and non‐invasive BCI differ; however, it is widely used in various scenarios.
Shugeng Chen, Mingyi Chen, Xu Wang, Xiuyun Liu, Bing Liu, Dong Ming   +5 more
wiley   +1 more source

Design of an SAR-Assisted Offset-Calibrated Chopper CFIA for High-Precision 4–20 mA Transmitter Front Ends

Applied Sciences
In loop-powered 4–20 mA transmitter systems, sensors like temperature, pressure, flow, and gas sensors are chosen based on specific application requirements.
Jian Ren, Yiqun Niu, Bin Liu, Meng Li, Yansong Bai, Yuang Chen   +5 more
doaj   +1 more source

Chopper-Stabilized Instrumentation Amplifier with Automatic Frequency Tuning Loop

Micromachines, 2018
A variable-gain chopper-stabilized instrumentation amplifier (chopper IA), which employs a low pass filter (LPF) to attenuate the up-converted noise at the chopping frequency, is presented. The circuit is designed and fabricated with Taiwan Semiconductor
Chen-Mao Wu, Hsiao-Chin Chen, Ming-Yu Yen, San-Ching Yang   +3 more
doaj   +1 more source

IoT and machine learning models for multivariate very short‐term time series solar power forecasting

IET Wireless Sensor Systems, Volume 14, Issue 6, Page 381-395, December 2024.
The authors’ work pioneers the integration of the Internet of Things (IoT) into solar power systems. The authors’ study focuses on solar irradiance forecasting using long short‐term memory and Bi‐LSTM models, achieving high accuracy. The solar irradiance forecasts are evaluated in terms of root‐mean‐square error (RMSE) and mean absolute error (MAE) in ...
Su Kyi, Attaphongse Taparugssanagorn
wiley   +1 more source

Architecture Design and Ground Performance of Netherlands‐China Low‐Frequency Explorer

Radio Science, Volume 59, Issue 8, August 2024.
Abstract The Netherlands‐China Low‐Frequency Explorer (NCLE) (Boonstra et al., 2017, https://www.ursi.org/proceedings/procGA17/papers/Paper_J19‐2(1603).pdf; Chen et al., 2020, https://ui.adsabs.harvard.edu/abs/2020AAS…23610203C/abstract) is a radio instrument for astrophysical studies in the low‐frequency range (80 kHz–80 MHz).
Sukanth Karapakula, Christiaan Brinkerink, Antonio Vecchio, Hamid R. Pourshaghaghi, Peter Dolron, Roel Jordans, Eric Bertels, Gerard Aalbers, Mark Ruiter, Albert J. Boonstra, Mark Bentum, David Prinsloo, Michel Arts, Jeanette Bast, Sieds Damstra, Albert van Duin, Nico Ebbendorf, Hans van der Marel, Juergen Morawietz, Roel Witvers, Wietse Poiesz, Rico van Dongen, Baptiste Cecconi, Philippe Zarka, Moustapha Dekkali, Linjie Chen, Mingyuan Wang, Mo Zhang, Maohai Huang, Yihua Yan, Liang Dong, Baolin Tan, Lihua Zhang, Liang Xiong, Ji Sun, Hongbo Zhang, Jinsong Ping, Marc Klein Wolt, Heino Falcke   +38 more
wiley   +1 more source

A low-noise, high-SNR and large-dynamic-range balanced homodyne detector for broadband squeezed light measurement

Results in Physics
Squeezing-based quantum metrology has been extensively applied in the field of precision measurement. Performance characteristics of squeezed light are obtained by a balanced homodyne detector.
Jinrong Wang, Shuange Wu, Liying Hou, Chengdong Mi, Xurong Shi, Xuzhen Gao   +5 more
doaj   +1 more source

High‐density implantable neural electrodes and chips for massive neural recordings

Brain‐X, Volume 2, Issue 2, June 2024.
High‐density neural recordings with superior spatiotemporal resolution are powerful in unveiling cellular‐scale neural communication for cutting‐edge neuroscience discoveries and applications. The number of channels in both electrodes and chips has grown from a few to thousands or even tens of thousands in recent decades.
Longchun Wang, Yanxing Suo, Jiahao Wang, Xuanqi Wang, Kai Xue, Jingjing An, Xun Sun, Qinyu Chen, Xiaochen Tang, Yang Zhao, Bowen Ji, Jingquan Liu   +11 more
wiley   +1 more source