Results 21 to 30 of about 14,945 (257)

Semicylindrical microresonator: excitation, modal structure, and Q factor

open access: yes, 2020
The semicylindrical microresonator with relatively simple excitation with a plane wave is studied. The resonator is formed on the base of the dielectric/metal/dielectric structure, where the wave energy penetrates into resonator through a thin metal ...
Haroyan, Hovhannes   +3 more
core   +1 more source

A Dual Wide-Band Mushroom-Shaped Dielectric Antenna for 5G Sub-6-GHz and mm-Wave Bands

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
The design and implementation of a dual wide-band mushroom-shaped antenna are presented in this paper. The antenna consists of a cylindrical dielectric resonator (cDRA), a cylindrical dielectric rod as a waveguide (cDR), and a dielectric lens (DL).
Reza Shamsaee Malfajani   +5 more
doaj   +1 more source

Wideband and UWB antennas for wireless applications. A comprehensive review [PDF]

open access: yes, 2017
A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar,
Cicchetti, Renato   +2 more
core   +3 more sources

Submillimeter wave communication versus millimeter wave communication

open access: yesDigital Communications and Networks, 2020
This paper studies the performance of a submillimeter wave antenna operating between frequencies 0.1 THz and 10 THz with a 4-cyano-4-pentylbiphenyl [5CB] substrate.
Madhuprana Goswami, Hyuck M. Kwon
doaj   +1 more source

Leaky-mode cylindrical dielectric resonator antenna

open access: yesElectronics Letters, 1997
A cylindrical dielectric resonator (CDR) antenna, operating in leaky TM-modes, is presented. The antenna is composed of the CDR, short-circuited by parallel rectangular conducting plates. The radiation pattern depends on the size and shape of conducting plates.
R. Aleksiejunas, V. Ivaska
openaire   +1 more source

Curvature-induced radiation of surface plasmon polaritons propagating around bends [PDF]

open access: yes, 2007
We present a theoretical study of the curvature-induced radiation of surface plasmon polaritons (SPPs) propagating around bends at metal-dielectric interfaces. We explain qualitatively how the curvature leads to distortion of the phase front, causing the
E. D. Palik   +3 more
core   +2 more sources

MEASUREMENT OF FOAM PLASTICS PERMITTIVITY WITH THE RESONANCE METHOD USING A WAVEGUIDE-DIELECTRIC RESONATOR [PDF]

open access: yesРадиофизика и электроника, 2016
The rapid development of electronic technology is characterized by continuous expanding the potentials of new types of created elements, devices and systems that use porous plastics.
R. I. Bilous   +4 more
doaj   +1 more source

Complex Permittivity Measurements at Variable Temperatures of Low Loss Dielectric Substrates Employing Split Post and Single Post Dielectric Resonators [PDF]

open access: yes, 2004
A split post dielectric resonator in a copper enclosure and a single post dielectric resonator in a cavity with superconducting end-plates have been constructed and used for the complex permittivity measurements of single crystal substrates.
Jacob, Mohan V.   +3 more
core   +2 more sources

Electromagnetic radiation by antennas of arbitrary shape in a layered spherical media [PDF]

open access: yes, 2009
A unified method of moments model is developed for the analysis of arbitrarily shaped antennas that are radiating next to a multilayered dielectric sphere.
Khamas, S.K.
core   +1 more source

Tunneling Proximity Resonances: Interplay between Symmetry and Dissipation [PDF]

open access: yes, 1999
We report the first observation of bound-state proximity resonances in coupled dielectric resonators. The proximity resonances arise from the combined action of symmetry and dissipation.
Bayer   +10 more
core   +2 more sources

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