Results 21 to 30 of about 33,663 (265)

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

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

Optimized microwave illusion device

open access: yesScientific Reports, 2017
AbstractWe report the design, fabrication and experimental verification of an illusion device working at microwave frequencies. A two dimensional topology optimization procedure is employed to find the binary layout of a dielectric coating that, when wrapped around a metallic cylinder, mimics the scattering from a predefined, arbitrarily-shaped ...
Vial, B, Torrico, MM, Hao, Y
openaire   +4 more sources

Microwave Magnetoelectric Devices

open access: yesAdvances in Condensed Matter Physics, 2012
Tunable microwave magnetoelectric devices based on layered ferrite-ferroelectric structures are described. The theory and experiment for attenuator, band-pass filter and phase shifter are presented.
A. S. Tatarenko, M. I. Bichurin
doaj   +1 more source

Smart Modeling of Microwave Devices

open access: yesIEEE Microwave Magazine, 2010
Modeling and computer-aided design (CAD) techniques are essential for microwave design, especially with the drive towards first-pass design success. We have described neural networks for microwave modeling and design. Neural networks are suitable when modeling a required relationship for which analytical formulas are hard to derive, or for which the ...
Kabir, H   +5 more
openaire   +3 more sources

Coexistence of multiuser entanglement distribution and classical light in optical fiber network with a semiconductor chip

open access: yesChip
Building communication links among multiple users in a scalable and robust way is a key objective in achieving large-scale quantum networks. In a realistic scenario, noise from the coexisting classical light is inevitable and can ultimately disrupt the ...
Xu Jing   +13 more
doaj   +1 more source

Photo-devices for optical controlling of microwave circuits

open access: yesJournal of Telecommunications and Information Technology, 2001
The most important optical devices which can be used for controlling microwave circuits will be presented in the paper. The performance and the parameters of the devices such as semiconductor microwave optoelectronic switches, photodiodes and ...
Zenon R. Szczepaniak, Bogdan A. Galwas
doaj   +1 more source

Graphene‐Based Microwave Metasurfaces and Radio‐Frequency Devices

open access: yesAdvanced Photonics Research, 2021
Graphene, as a 2D material, has attracted significant attention due to its particular electronic band structure and unique physical properties. Metasurfaces integrated with graphene hold great promise for dynamic manipulation of the electromagnetic waves,
Jin Zhang, Weiren Zhu
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

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