Results 31 to 40 of about 3,824 (171)

Characterization of high-speed balanced photodetectors [PDF]

open access: yes, 2017
We report the characterization of a balanced ultrafast photodetector. For this purpose, we use a recently developed time-domain laser-based vector network analyzer (VNA) to determine the common-mode rejection ratio (CMRR) of the device under test.
Bao, Hualong   +5 more
core   +1 more source

Generation and Measurement of Squeezed Vacuum States at Audio-Band Frequencies

open access: yesApplied Sciences, 2019
Squeezed vacuum states at audio-band frequencies are important quantum resources for practical applications. We demonstrated the generation of squeezed vacuum states at the audio-band frequencies from a subthreshold optical parametric oscillator with a ...
Yinghao Gao   +3 more
doaj   +1 more source

A Chopper-Stabilized Amplifier With a Tunable Bandwidth for EEG Acquisition Applications

open access: yesIEEE Access, 2019
A chopper-stabilized amplifier for bio-potential signal acquisition applications is presented. The proposed design includes an AC-coupled chopper-stabilized amplifier to reduce the 1/f noise and a tunable MOS-capacitor and a tunable pseudo-resistor to ...
Chung-Jae Lee, Jong-In Song
doaj   +1 more source

Analysis and design of a differential sampled-line six-port reflectometer [PDF]

open access: yes, 2012
The analysis and design of a differential six-port reflectometer (SPR) based on a sampled-line structure is presented in this paper. The practical differential SPR is realized in Coplanar Strip (CPS) transmission line form, using two baluns for ...
Chongcheawchamnan, M   +3 more
core   +2 more sources

Design of current sources for load common mode optimization

open access: yesJournal of Electrical Bioimpedance, 2018
Bioimpedance measurement systems often use the Howland current sources to excite the biological material under study. Usually, difference or instrumentation amplifiers are used to measure the resulting voltage drop on this material.
Sirtoli Vinicius G   +2 more
doaj   +1 more source

1 × 2 Switchable Dual-Mode Optical 90° Hybrid Device Based on Thermo-Optic Phase Shifters and 2 × 2 MMI Couplers on SOI Platform

open access: yesIEEE Photonics Journal, 2021
This paper designs a 1 × 2 switchable dual-mode optical 90° hybrid device on the silicon-on-insulator (SOI) platform for the mode division multiplexing hybridized coherent transmission systems in optical communication.
Hai Ta Duy   +6 more
doaj   +1 more source

Development of ECG Common Mode Rejection Ratio Automatic Test System

open access: yesZhongguo yiliao qixie zazhi
To comprehensively meet the test requirements for the common mode rejection ratio (CMRR) across different ECG-particular standards, this paper presents the design of an ECG CMRR automatic test system.
Yongqiang CHEN, Binbin YAN, Jun ZHANG
doaj   +1 more source

The Design of a Low Noise, Multi-Channel Recording System for Use in Implanted Peripheral Nerve Interfaces

open access: yesSensors, 2022
In the development of implantable neural interfaces, the recording of signals from the peripheral nerves is a major challenge. Since the interference from outside the body, other biopotentials, and even random noise can be orders of magnitude larger than
Shamin Sadrafshari   +5 more
doaj   +1 more source

The Complexity of Multidimensional Learning in Agriculture

open access: yesEconometrica, Volume 94, Issue 2, Page 465-503, March 2026.
Studies on agricultural technology adoption often focus on one input, practice, or package, which is analytically useful, but may overlook the complexities involved with multidimensional learning needed for a lot of agricultural decisions. In Kenya, we study farmers' dynamic learning (from oneself and others) and adoption decisions over six seasons ...
Rachid Laajaj, Karen Macours
wiley   +1 more source

Electromagnetic compatibility in myoelectrode amplifiers: Isolation, impedance and CMRR [PDF]

open access: yes, 2010
SUMMARY: Electromagnetic compatibility of myoelectrode amplifiers for prosthetic control is important for safe operation in electrically noisy conditions.
Poulton, Adrian
core  

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