Results 21 to 30 of about 14,448,705 (337)
Towards continuous EIT monitoring for hemorrhagic stroke patients
Frontiers in Physiology, 2023 The practical implementation of continuous monitoring of stroke patients by Electrical Impedance Tomography (EIT) is addressed. In a previous paper, we have demonstrated EIT sensitivity to cerebral hemodynamics, using scalp-mounted electrodes, very low ...
Taweechai Ouypornkochagorn +2 more
doaj +1 more source
Quantum and private capacities of low-noise channels [PDF]
Information Theory Workshop, 2017 We determine both the quantum and the private capacities of low-noise quantum channels to leading orders in the channel's distance to the perfect channel. It has been an open problem for more than 20 years to determine the capacities of some of these low-
Felix Leditzky, D. Leung, Graeme Smith
semanticscholar +1 more source
A Chopper Stabilization Audio Instrumentation Amplifier for IoT Applications
Journal of Low Power Electronics and Applications, 2020 A low-noise instrumentation amplifier dedicated to a nano- and micro-electro-mechanical system (M&NEMS) microphone for the use in Internet of Things (IoT) applications is presented. The piezoresistive sensor and the electronic interface are respectively,
Jamel Nebhen +2 more
doaj +1 more source
HIGH SENSITIVITY 0.5 TO 19.5 GHZ RECEIVER WITH 1.1-GHZ INSTANTANEOUS BANDWIDTH
Radio Physics and Radio Astronomy, 2014 A wideband high sensitivity microwave receiver operating within 0.5 to 19.5 GHz and providing a 1.1-GHz instantaneous bandwidth is described. The receiver shows a noise figure as low as 10 dB and the input third-order intercept point up to 10 dBm as well.
V. A. Volkov +3 more
doaj +1 more source
Minimally-Invasive Neural Interface for Distributed Wireless Electrocorticogram Recording Systems
Sensors, 2018 This paper presents a minimally-invasive neural interface for distributed wireless electrocorticogram (ECoG) recording systems. The proposed interface equips all necessary components for ECoG recording, such as the high performance front-end integrated ...
Sun-Il Chang, Sung-Yun Park, Euisik Yoon
doaj +1 more source
Low Noise Balanced Homodyne Detector for Quantum Noise Measurement
IEEE Access, 2022 The research of quantum noise in the interaction of laser and atoms plays a critical role in quantum optical experiments. The measurement of quantum noise is mainly based on the balanced homodyne detection method.
Shubo Lang +4 more
doaj +1 more source
A Low Noise Receiver for Submillimeter Astronomy [PDF]
, 1986 A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning
Miller, R. E. +3 more
core +1 more source
AIP Advances, 2019 The InGaAs-InAlAs-InP high electron mobility transistor (InP HEMT) is the preferred active device used in a cryogenic low noise amplifier (LNA) for sensitive detection of microwave signals. We have investigated the angular dependence of the InP HEMT when
Isabel Harrysson Rodrigues +6 more
doaj +1 more source
IEEE Access, 2019 A high-gain and low-noise folded down-conversion mixer for K-band applications is presented in this paper. Benefited from the folded double-balanced architecture, the transconductance (gm) stage and the switch stage of the mixer can operate in-different ...
Yao Peng +6 more
doaj +1 more source
Transimpedance Amplifier for Noise Measurements in Low-Resistance IR Photodetectors
Applied Sciences, 2023 This paper presents the design and testing of an ultra-low-noise transimpedance amplifier (TIA) for low-frequency noise measurements on low-impedance (below 1 kΩ) devices, such as advanced IR photodetectors.
Krzysztof Achtenberg +4 more
doaj +1 more source