Results 41 to 50 of about 9,764,470 (204)

Flow structure and unsteady characteristics of fountain flow induced by dual impinging jets

Kongqi donglixue xuebao
The flow-field structure and mechanical characteristics of dual impinging jets are critical issues during the takeoff and landing phases of aircraft. However, the unsteady characteristics of the fountain effect induced by dual impinging jets have not yet
Yifan Zhao, Rongping Zhang, Rongping Zhang, Yuxiang Liang, Yuxiang Liang, Jiaxi Zhao, Jiaxi Zhao, Xunnian Wang   +7 more
doaj   +1 more source

DTI denoising for data with low signal to noise ratios [PDF]

, 2005
Low signal to noise ratio (SNR) experiments in diffusion tensor imaging (DTI) give key information about tracking and anisotropy, e. g., by measurements with small voxel sizes or with high b values.
Prigarin, Sergej M., Pütz, Benno, Hasan, Khader, Hasan, Khader M., Hahn, Klaus R., Prigarin, Sergej, Hahn, Klaus   +6 more
core   +1 more source

Low-frequency noise in nanowires

Nanoscale, 2023
This paper reviews 40 years of research on low-frequency noise and random-telegraph noise in metallic and semiconducting nanowires.
openaire   +2 more sources

Design of a low-noise aeroacoustic wind tunnel facility at Brunel University [PDF]

, 2014
This paper represents the design principle of a quiet, low turbulence and moderately high speed aeroacoustic wind tunnel which was recently commissioned at Brunel University.
Kim, JH, Tze Pei Chong, Vathylakis, A, Alexandros Vathylakis, Jung Hoon Kim, Chong, TP   +5 more
core   +1 more source

Design and Analysis of Low-Power Ultra-Wideband CMOS Variable-Gain LNAs With Sub-2.5 dB NF_min Using Coupled Microstrip-Line Neutralization and AGF-Inductor

IEEE Access
This study reports low power-dissipation (PD) and low noise-figure (NF) ultra-wideband CMOS variable-gain amplifiers (VGAs). VGA1 and VGA2 use coupled microstrip-line (CL) neutralization with an adjustable-gain-flatness inductor and multiple inductive ...
Jin-Fa Chang
doaj   +1 more source

Low-Noise Techniques in Detectors [PDF]

Annual Review of Nuclear and Particle Science, 1988
We concentrate in this review on the fundamentals of low-noise techniques and on understanding the limits in the charge signal measurements. Charge collection and signal formation in detectors, the origin and properties of noise, noise and amplification of charge, and detectors and signal processing are discussed. (AIP)
openaire   +1 more source

Analysis and Optimization of Noise Response for Low-Noise CMOS Image Sensors [PDF]

, 2012
CMOS image sensors are nowadays widely used in imaging applications and particularly in low light flux applications. This is really possible thanks to a reduction of noise obtained, among others, by the use of pinned photodiode associated with a ...
Molina, Romain, P. Magnan, P. Martin-Gonthier, Cervantes, Paola, R. Molina, P. Cervantes, Magnan, Pierre, Martin-Gonthier, Philippe   +7 more
core   +1 more source

A 35 nV/√Hz Analog Front-End Circuit with Adjustable Bandwidth and Gain in UMC 40 nm CMOS for Biopotential Signal Acquisition

Sensors
This paper presents a 35 nV/√Hz analog front-end (AFE) circuitdesigned in the UMC 40 nm CMOS technology for the acquisition of biopotential signal. The proposed AFE consists of a capacitive-coupled instrumentation amplifier (CCIA) and a combination of a ...
Lu Liu, Bin Wang, Yiren Xu, Xiaokun Lin, Weitao Yang, Yinglong Ding   +5 more
doaj   +1 more source

A Stacked Back Side-Illuminated Voltage Domain Global Shutter CMOS Image Sensor with a 4.0 μm Multiple Gain Readout Pixel

Sensors, 2020
A backside-illuminated complementary metal-oxide-semiconductor (CMOS) image sensor with 4.0 μm voltage domain global shutter (GS) pixels has been fabricated in a 45 nm/65 nm stacked CMOS process as a proof-of-concept vehicle.
Ken Miyauchi, Kazuya Mori, Toshinori Otaka, Toshiyuki Isozaki, Naoto Yasuda, Alex Tsai, Yusuke Sawai, Hideki Owada, Isao Takayanagi, Junichi Nakamura   +9 more
doaj   +1 more source

High-Power-Efficiency Readout Circuit Employing Average Capacitance-to-Voltage Converter for Micro-Electro-Mechanical System Capacitive Accelerometers

Sensors, 2023
A capacitance-to-voltage converter (CVC) is proposed in this paper and applied to a readout circuit for a micro-electro-mechanical system (MEMS) accelerometer to improve the power efficiency.
Linxi Li, Xinquan Lai, Yuheng Wang, Zhiwen Niu   +3 more
doaj   +1 more source