Results 41 to 50 of about 2,793 (286)

Analysis and Optimization of the Operating Range of a Monopole Antenna Involving ‘Meander’ Type Slot In- homogeneities [PDF]

open access: yesRadio Physics and Radio Astronomy, 2022
Subject and Purpose. The paper presents results of numerical modeling and experimental studies of a disk-shaped microstrip antenna involving ‘meander’ type slotted inhomogeneities.
L. M. Lytvynenko   +2 more
doaj   +1 more source

AN ANALYTIC MODEL FOR BUOYANCY RESONANCES IN PROTOPLANETARY DISKS [PDF]

open access: yesThe Astrophysical Journal, 2014
Zhu, Stone, and Rafikov (2012) found in 3D shearing box simulations a new form of planet-disk interaction that they attributed to a vertical buoyancy resonance in the disk. We describe an analytic linear model for this interaction. We adopt a simplified model involving azimuthal forcing that produces the resonance and permits an analytic description of
Lubow, Stephen H., Zhu, Zhaohuan
openaire   +2 more sources

Multiple Fano Resonances Based on Plasmonic Resonator System With End-Coupled Cavities for High-Performance Nanosensor

open access: yesIEEE Photonics Journal, 2017
A plasmonic resonator system composed of a metal-insulator-metal waveguide coupled with a disk and a ring cavity was proposed to produce double Fano resonances, which resulted from the coupling between the narrow discrete resonances of the ring cavity ...
Chao Li   +5 more
doaj   +1 more source

Self-aligned single-electrode actuation of tangential and wineglass modes using PMN-PT

open access: yesMicrosystems & Nanoengineering, 2023
Considering the evolution of rotation sensing and timing applications realized in micro-electro-mechanical systems (MEMS), flexural mode resonant shapes are outperformed by bulk acoustic wave (BAW) counterparts by achieving higher frequencies with both ...
Ozan Erturk   +4 more
doaj   +1 more source

Design of microcavity resonators for single-atom detection [PDF]

open access: yes, 2007
Whispering gallery modes of a microdisk resonator are useful for the optical detection of single rubidium and cesium atoms near the surface of a substrate. Light is coupled into two high-Q whispering-gallery modes of the disk which can provide attractive
Rosenblit, Michael   +4 more
core   +1 more source

Disk-loaded silicon micro-ring resonator for high-Q resonance

open access: yesOptics Express, 2021
By adding two disks to a standard silicon micro-ring resonator, a very high-quality factor (Q) asymmetric resonance with Q values as high as 7.773 × 105 and slope rates in excess of 880 dB/nm can be achieved. A circuit model has been proposed for this device based on which an analysis has been carried out that can predict the effect of reflections in ...
Homa Zarebidaki   +3 more
openaire   +3 more sources

Technique and Circuit for Contactless Readout of Piezoelectric MEMS Resonator Sensors

open access: yesSensors, 2020
A technique and electronic circuit for contactless electromagnetic interrogation of piezoelectric micro-electromechanical system (MEMS) resonator sensors are proposed. The adopted resonator is an aluminum-nitride (AlN) thin-film piezoelectric-on-silicon (
Marco Baù   +5 more
doaj   +1 more source

Design and analysis of a novel compact high permittivity dielectric resonator antenna

open access: yes, 2009
A very compact and efficient dielectric resonator antenna is proposed and investigated. The novel structure is analyzed using two numerical methods and design guidelines are established.
M.D. Rotaru   +3 more
core   +1 more source

Thermometry based on Whispering Gallery Mode resonators [PDF]

open access: yes, 2012
Whispering gallery (WG) mode resonators were studied since 1980s for precision clock oscillators and for cavity quantum electrodynamics studies. They are a kind of stable, high Q, microwave resonators where a symmetric dielectric medium, such as a ...
Yu, Lili
core   +1 more source

RADIATION Q-FACTOR OF DIFFERENT SHAPE DIELECTRIC RESONATORS WITH TESTED CONDUCTORS AND LIQUID DIELECTRICS [PDF]

open access: yesРадиофизика и электроника, 2015
While using whispering gallery modes dielectric resonators as measurement cells for finding the electrophysical parameters of materials it is necessary to choose the resonator structure, which is characterized by the acceptable radiation Q-factor values.
A. A. Barannik   +4 more
doaj   +1 more source

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