Results 31 to 40 of about 14,850,784 (326)

Boosting the signal-to-noise of low-field MRI with deep learning image reconstruction

Scientific Reports, 2021
Recent years have seen a resurgence of interest in inexpensive low magnetic field (
Neha Koonjoo, Bo Zhu, G. Bagnall, D. Bhutto, Matthew S. Rosen   +4 more
semanticscholar   +1 more source

Constant and switched bias low frequency noise in p-MOSFETs with varying gate oxide thickness [PDF]

, 2002
The low-frequency noise power spectral density of MOSFETs is decreased if the MOSFETs are periodically switched 'off' (switched bias conditions). The influence of the gate oxide thickness on fixed bias and switched biased low frequency drain current ...
Knitel, M.J., Kolhatkar, J.S., Salm, C., Wallinga, H.   +3 more
core   +2 more sources

On the angular dependence of InP high electron mobility transistors for cryogenic low noise amplifiers in a magnetic field

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, David Niepce, Arsalan Pourkabirian, Giuseppe Moschetti, Joel Schleeh, Thilo Bauch, Jan Grahn   +6 more
doaj   +1 more source

Temporal Noise Analysis of Charge-Domain Sampling Readout Circuits for CMOS Image Sensors

Sensors, 2018
This paper presents a temporal noise analysis of charge-domain sampling readout circuits for Complementary Metal-Oxide Semiconductor (CMOS) image sensors. In order to address the trade-off between the low input-referred noise and high dynamic range, a Gm-
Xiaoliang Ge, Albert J. P. Theuwissen
doaj   +1 more source

A low‐noise current‐reused CMOS active inductor by exploiting Gm‐boosting technique

IET Microwaves, Antennas & Propagation, 2021
This work introduces a new low‐noise current‐reused CMOS active inductor (AI) based on Gyrator‐C configuration. In the proposed AI, a simple common‐source amplifier is utilised for boosting effective Gm and improving noise performance of the AI.
Abdollah Sabbaghi, Emad Ebrahimi
doaj   +1 more source

Low multiplication noise thin Al0.6Ga0.4As avalanche photodiodes [PDF]

, 2001
Avalanche multiplication and excess noise were measured on a series of Al0.6Ga0.4As p+in+ and n+ip+ diodes, with avalanche region thickness, w ranging from 0.026 μm to 0.85 μm.
David, J.P.R., Grey, R., Plimmer, S.A., Rees, G.J., Tan, C.H., Tozer, R.C.   +5 more
core   +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., Phillips, T. G., Wengler, M. J., Woody, D. P.   +3 more
core   +1 more source

A Review on Machine Topologies and Control Techniques for Low-Noise Switched Reluctance Motors in Electric Vehicle Applications

IEEE Access, 2018
This paper presents a technical overview for low-noise switched reluctance motor (SRM) drives in electric vehicle (EV) applications. With ever-increasing concerns over environmental and cost issues associated with permanent magnet machines, there is a ...
C. Gan, Jianhua Wu, Qingguo Sun, Wubin Kong, Hongyu Li, Yihua Hu   +5 more
semanticscholar   +1 more source

The X-ray fast-time variability of Sco X-2 (GX 349+2) with RXTE [PDF]

, 2001
Sco X-2 (GX 349+2) is a low-mass X-ray binary and Z source. We have analysed 156 ks of Rossi X-ray Timing Explorer data, obtained in 1998 January, on this source. We investigated the fast-time variability as a function of position on the Z track.
Agrawal, Alpar, Belloni, Berger, Bildsten, Bradt, Dieters, Dieters, E. Kuulkers, Fortner, Hasinger, Hasinger, Hertz, Homan, Jonker, Jonker, Jonker, Klein, Klein, Kuulkers, Kuulkers, Lamb, Lamb, Lewin, M. Van Der Klis, Mineshige, O'Neill, O'Neill, Orosz, P. M. O'Neill, Ponman, Psaltis, Psaltis, Psaltis, R. K. Sood, Schulz, Shibazaki, Steiman-Cameron, Stella, Stella, Stella, Sunyaev, Titarchuk, Titarchuk, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Van Der Klis, Wijnands, Wijnands, Wu, Young, Yu, Zhang   +59 more
core   +2 more sources

A Low-Noise X-ray Astronomical Silicon-On-Insulator Pixel Detector Using a Pinned Depleted Diode Structure

Sensors, 2017
This paper presents a novel full-depletion Si X-ray detector based on silicon-on-insulator pixel (SOIPIX) technology using a pinned depleted diode structure, named the SOIPIX-PDD.
Hiroki Kamehama, Shoji Kawahito, Sumeet Shrestha, Syunta Nakanishi, Keita Yasutomi, Ayaki Takeda, Takeshi Go Tsuru, Yasuo Arai   +7 more
doaj   +1 more source