Results 51 to 60 of about 14,849,827 (330)

Low-frequency charge noise in Si/SiGe quantum dots [PDF]

open access: yesPhysical review B, 2019
Electron spins in silicon have long coherence times and are a promising qubit platform. However, electric field noise in semiconductors poses a challenge for most single- and multi-qubit operations in quantum-dot spin qubits.
Elliot J. Connors   +4 more
semanticscholar   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Balun LNA Thermal Noise Analysis and Balancing With Common-Source Degeneration Resistor

open access: yesIEEE Access, 2020
The Balun low noise amplifier (LNA) is an LNA that exploits a combination of a common-source (CS) and a common-gate (CG) transistors, which cancels the noise and distortion of the CG stage.
Qusai M. Abubaker, Lutfi Albasha
doaj   +1 more source

Low Noise Amplifier at 60 GHz Using Low Loss On-Chip Inductors

open access: yesJournal of Electrical and Computer Engineering, 2023
This paper proposes the technique of using low loss on-chip inductors in the design of low noise amplifier (LNA) that offers high gain and lower noise figure.
Karthigha Balamurugan   +2 more
doaj   +1 more source

Low-noise nozzle valve [PDF]

open access: yes, 1990
A low noise, variable discharage area, valve is constructed having opposed recesses within which a pair of gates are slidably disposed. Each of the gates is provided with upstream edges having a radius thereon, the radius enabling smooth, accelerated ...
Aaron, James, Gwin, Hal S.
core   +1 more source

The Use of Cryogenic HEMT Amplifiers in Wide Band Radiometers [PDF]

open access: yes, 2000
Advances in device fabrication, modelling and design techniques have made wide band, low noise cryogenic amplifiers available at frequencies up to 106 GHz. Microwave radiometry applications as used in radio astronomy capitalize on the low noise and large
Jarosik, Norman
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Low Frequency Noise of Tantalum Capacitors

open access: yesActive and Passive Electronic Components, 2002
A low frequency noise and charge carriers transport mechanism analysis was performed on tantalum capacitors in order to characterise their quality and reliability.
J. Sikula   +6 more
doaj   +1 more source

A Low Power Low Phase Noise Oscillator for MICS Transceivers

open access: yesSensors, 2017
A low-power, low-phase-noise quadrature oscillator for Medical Implantable Communications Service (MICS) transceivers is presented. The proposed quadrature oscillator generates 349~689 MHz I/Q (In-phase and Quadrature) signals covering the MICS band. The
Dawei Li   +3 more
doaj   +1 more source

Model Implementation of Lorentzian Spectra for Circuit Noise Simulations in the Frequency Domain

open access: yesIEEE Journal of the Electron Devices Society, 2022
This work presents a new method for the Verilog-A implementation of Lorentzian noise models, in a module called VERILOR, which can automatically generate either Lorentzian or 1/f-like noise spectra depending on the trap density and gate oxide area, for ...
Angeliki Tataridou   +2 more
doaj   +1 more source

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