Results 61 to 70 of about 65,089 (278)

Microwave field effect transistor [PDF]

open access: yes, 1989
Electrodes of a high power, microwave field effect transistor are substantially matched to external input and output networks. The field effect transistor includes a metal ground plane layer, a dielectric layer on the ground plane layer, a gallium ...
Huang, Ho-Chung
core   +1 more source

A photonic crystal Josephson traveling wave parametric amplifier

open access: yes, 2019
An amplifier combining noise performances as close as possible to the quantum limit with large bandwidth and high saturation power is highly desirable for many solid state quantum technologies such as high fidelity qubit readout or high sensitivity ...
Basko, Denis M.   +9 more
core   +3 more sources

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini   +6 more
wiley   +1 more source

Design of Triplexer Using E-Stub-Loaded Composite Right-/Left-Handed Resonators and Quasi-Lumped Impedance Matching Network

open access: yesIEEE Access, 2018
A compact triplexer based on E-stub-loaded composite right-/left-handed (ESL-CRLH) resonators with quasi-lumped impedance matching network is presented in this paper. The equivalent circuit model of the ESL-CRLH resonator is presented first and its left-/
Kai Da Xu   +4 more
doaj   +1 more source

Design aspects of Bi2Sr2CaCu2O8+δ THz sources: optimization of thermal and radiative properties

open access: yesBeilstein Journal of Nanotechnology, 2021
Impedance matching and heat management are important factors influencing the performance of terahertz sources. In this work we analyze thermal and radiative properties of such devices based on mesa structures of a layered high-temperature superconductor ...
Mikhail M. Krasnov   +4 more
doaj   +1 more source

Fast Single-Charge Sensing with an rf Quantum Point Contact

open access: yes, 2007
We report high-bandwidth charge sensing measurements using a GaAs quantum point contact embedded in a radio frequency impedance matching circuit (rf-QPC).
Gossard, A. C.   +3 more
core   +1 more source

Design of a 3 GHz fine resolution LC DCO [PDF]

open access: yes, 2017
In this thesis, the design of a fine resolution LC digitally controlled oscillator (DCO) is introduced. Two NMOS varactor banks are used to achieve 12 bits medium and fine frequency tuning.
Zhao, Xuming, active 21st century
core   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Enhanced power-line energy harvesting by capacitance compensation for remote self-powered CO2 monitoring

open access: yesAIP Advances
Aiming at carbon neutrality and compliance, it is necessary to monitor carbon emissions in remote areas. In this study, we proposed a remote self-powered CO2 monitoring system powered by a capacitance compensation enhanced power line energy harvester ...
Jieying Qian, Jiawen Xu
doaj   +1 more source

Adaptive Feedforward Compensating Self-Sensing Method for Active Flutter Suppression

open access: yesSensors, 2018
A single piezoelectric patch can be used as both a sensor and an actuator by means of the self-sensing piezoelectric actuator, and the function of self-sensing shows several advantages in many application fields. However, some problems exist in practical
Yizhe Wang, Zhiwei Xu
doaj   +1 more source

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