Results 41 to 50 of about 19,885 (293)

Miniaturized top-metallized rectangular dielectric resonator antenna [PDF]

open access: yes, 2018
In this paper, a modal analysis of a rectangular dielectric resonator antenna (DRA), with unconventional boundary conditions, is carried out. Analytical equations of the fields inside the resonator and simulations are presented, showing that if a ...
Herraiz Martínez, Francisco Javier   +2 more
core  

Circularly polarized dielectric resonator antenna excited by a conformal wire [PDF]

open access: yes, 2008
A conformal spiral wire has been used to feed a dielectric resonator antenna to obtain a circular polarization. The parameters of the spiral have been optimized numerically so that minimum axial ratio (AR) and return losses are achieved.
Khamas, S.K.
core   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

A compact wideband dielectric resonator antenna with optimized inhomogeneous material distribution

open access: yesElectronics Letters
This article proposes a novel compact wideband dielectric resonator antenna design that incorporates inhomogeneous material distribution in a cubic structure.
Trupti Bellundagi, Binbin Yang
doaj   +1 more source

Two Elements Elliptical Slot CDRA Array with Corporate Feeding For X-Band Applications [PDF]

open access: yesIraqi Journal for Electrical and Electronic Engineering, 2014
In this paper, a compact two-element cylindrical dielectric resonator antenna (CDRA) array with corporate feeding is proposed for X-band applications.
Abdulkareem S. Abdullah   +3 more
doaj  

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

Experimental Test of a Two-dimensional Approximation for Dielectric Microcavities

open access: yes, 2009
Open dielectric resonators of different shapes are widely used for the manufacture of microlasers. A precise determination of their resonance frequencies and widths is crucial for their design. Most microlasers have a flat cylindrical geometry, and a two-
A. Richter   +12 more
core   +1 more source

Study on the performance deterioration of flexible UWB antenna [PDF]

open access: yes, 2009
A flexible transparent film uwb antenna for curved surfaces has been designed and developed for wireless communications. The antenna has demonstrated good performance over the entire UWB bandwidth.
Nilavalan, R, Peter, T
core   +2 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

High isolation MIMO antenna for 5G C-band application by using combination of dielectric resonator, electromagnetic bandgap, and defected ground structure

open access: yesEURASIP Journal on Wireless Communications and Networking, 2022
High isolation between massive MIMO antenna elements is one of the important parameters that improves antenna performance, especially for 5G communication applications.
Efri Sandi   +2 more
doaj   +1 more source

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