Results 11 to 20 of about 227,325 (292)

Microwave Lens for Polar Molecules [PDF]

open access: yes, 2010
We here report on the implementation of a microwave lens for neutral polar molecules suitable to focus molecules both in low-field-seeking and in high-field-seeking states.
Gerard Meijer   +7 more
core   +2 more sources

A Large-Signal Model for Two-Dimensional Hole Gas Diamond MOSFET Based on the QPZD

open access: yesIEEE Access, 2019
A compact large-signal model for hydrogen-terminated (C-H) diamond metal-oxide field effect transistors (MOSFETs) is presented based on an improved quasi-physical zone division (QPZD) model.
Yu Fu   +10 more
doaj   +1 more source

Millimeter-wave FET modeling based on a frequency extrapolation approach [PDF]

open access: yes, 2000
An empirical distributed model, based on electromagnetic analysis and standard S-parameter measurements up to microwave frequencies, is shown to be capable of accurate small-signal predictions up to the millimeter-wave range.
Cidronali, A.   +4 more
core   +1 more source

Configurable microwave structures for software defined (and cognitive) radio front ends [PDF]

open access: yes, 2010
Both Software Defined Radio and Cognitive Radio require a flexible transceiver front end. This paper introduces solutions to two important features of such a device; the antenna and the filter.
Hilton, GS, Warr, PA
core   +3 more sources

New High-Efficiency Resonant O-Type Devices as the Promising Sources of Microwave Power

open access: yesEnergies, 2020
New O-type high-power vacuum resonant microwave devices are considered in this study: COM klystrons, CSM klystrons and resotrodes. All these devices can output a large amount of power (up to units of MW and higher) with an efficiency of up to 90%.
Andrei Baikov, Olga Baikova
doaj   +1 more source

Improved Empirical Formula Modeling Method Using Neuro-Space Mapping for Coupled Microstrip Lines

open access: yesMicromachines, 2023
In this paper, an improved empirical formula modeling method using neuro-space mapping (Neuro-SM) for coupled microstrip lines is proposed. Empirical formulas with correction values are used for the coarse model, avoiding a slow trial-and-error process ...
Shuxia Yan   +5 more
doaj   +1 more source

Observation and interpretation of motional sideband asymmetry in a quantum electro-mechanical device [PDF]

open access: yes, 2014
Quantum electro-mechanical systems offer a unique opportunity to probe quantum noise properties in macroscopic devices, properties which ultimately stem from the Heisenberg Uncertainty Principle.
Clerk, A. A.   +6 more
core   +5 more sources

Ultra-low phase noise all-optical microwave generation setup based on commercial devices [PDF]

open access: yes, 2015
In this paper, we present a very simple design based on commercial devices for the all-optical generation of ultra-low phase noise microwave signals.
Bigler, E.   +7 more
core   +2 more sources

Axially symmetrical Fabry-Perot oscillator with multiple devices inserted in dielectric substrate [PDF]

open access: yes, 1997
We investigate an axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric substrate for power combining of many more devices in the microwave and millimeter wave frequency range.
Itoga, Toshihide   +2 more
core   +1 more source

Research on the Withstand Voltage Properties of Cr/Mn-Doped Al2O3 Ceramics in Vacuum

open access: yesElectronic Materials
Al2O3 ceramics are widely used in vacuum electronic devices. However, surface flashover in a vacuum during the application of high voltage significantly influences their reliability and restricts the development of vacuum electronic devices.
Dandan Feng   +5 more
doaj   +1 more source

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