Results 51 to 60 of about 81,809 (301)

An ultra low power MMIC amplifier using 50nm delta doped In0.52Al0.48As / In0.53Ga0.47As metamorphic HEMT [PDF]

, 2010
An ultra-low-power monolithic amplifier using 50-nm gate-length GaAs metamorphic high-electron-mobility transistor (MHEMT) has been designed and fabricated by a coplanar waveguide monolithic microwave integrated circuit ...
Lok, L.B., Chi-Jeon Hwang, Lai Bun Lok, Holland, Martin, Holland, M., Thayne, I.G., Hwang, C.J., Elgaid, Khaled, Elgaid, K., Hwang, C-J., Iain G. Thayne, Chong, Harold M H, Thayne, Iain G, Martin Holland, Hwang, Chi-Jeon, Khaled Elgaid, Harold M. H. Chong, Chong, Harold, Chong, H.M.H.   +18 more
core   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Flexible linearity profile low noise feedforward amplifiers for improving channel capacity [PDF]

, 2003
This paper describes a highly linear low noise amplifier (LNA) exhibiting a flexible linearity profile intended as a way to meet future flexible mobile communications standards.
Watkins, GT, Warr, PA
core  

Noise Measurements of a Low-Noise Amplifier in the FDM Readout System for SAFARI [PDF]

, 2020
The SPICA-SAFARI instrument requires extremely sensitive transition edge sensor (TES) arrays with a noise equivalent power of 2×10-19W/Hz and a readout system with an output noise that is dominated by the detector noise.
Boersma, Dick (author), de Lange, Gert (author), Audley, Michael D. (author), van der Kuur, Jan (author), Gao, J.R. (author), Wang, Qian (author), van der Tak, Floris (author), Khosropanah, Pourya (author), Aminaei, Amin (author)   +8 more
core   +1 more source

Temporal Interference Stimulation of Centromedian‐Parafascicular Complex in Disorders of Consciousness: A Pilot Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Treatment of disorders of consciousness (DoC) remains a major clinical challenge, and noninvasive, targeted modulation of deep brain structures has emerged as a promising therapeutic strategy. We aimed to evaluate the feasibility/safety and preliminary effects of thalamic temporal interference stimulation (TIS) targeting centromedian‐
Gengyao Hu, Changgeng Song, Dianwei Wu, Xiaoqian Niu, Jianmin Hao, Lijuan Liu, Xiaogang Kang, Wen Jiang   +7 more
wiley   +1 more source

Power-to-Noise Optimization in the Design of Neural Recording Amplifier Based on Current Scaling, Source Degeneration Resistor, and Current Reuse

Biosensors
This article presents the design of a low-power, low-noise neural signal amplifier for neural recording. The structure reduces the current consumption of the amplifier through current scaling technology and lowers the input-referred noise of the ...
Zhen Wang, Xiao Wang, Guijun Shu, Meng Yin, Shoushuang Huang, Ming Yin   +5 more
doaj   +1 more source

A Wide-Band Low Noise Amplifier for Terrestrial and Cable Receptions [PDF]

, 2006
We present the design of a wide-band low-noise amplifier （LNA） implemented in 0.35μm SiGe BiCMOS technology for cable and terrestrial tuner applications. The LNA utilizes current injection to achieve high linearity.
Dai Fafoster, Shi Yin, Ma Desheng
core  

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

A very low noise instrumentation amplifier for biomedical applications [PDF]

, 1986
An instrumentation amplifier for use in medical, biological and electrophysiological measurements is described. It is a very low cost, high performance, FET input amplifier, its outstanding characteristic being a very low noise level, of the order of one
M. BERTOLACCINI, PADOVINI, GIORGIO MICHELE   +1 more
core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source