Results 61 to 70 of about 85,692 (393)

Compact electric-LC resonators for metamaterials

, 2010
Alternative designs to an electric-LC (ELC) resonator, which is a type of metamaterial inclusion, are presented in this article. Fitting the resonator with an interdigital capacitor (IDC) helps to increase the total capacitance of the structure.
Alley, Aydin, Aydin, Baena, Bilotti, Caloz, Caloz, Chen, Chen, Christophe Fumeaux, Chu, Dai, Derek Abbott, Fang, Houzet, Koschny, Lapine, Lenz, Ordal, Padilla, Pendry, Pendry, Sanada, Schurig, Schurig, Shalaev, Smith, Smith, Withawat Withayachumnankul, Withayachumnankul, Zharova   +30 more
core   +1 more source

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

Advanced 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, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Dual‐mode dielectric resonator antenna design with stub‐loaded feeding slot

Electronics Letters
A dual‐mode dielectric resonator antenna based on a microstrip line‐slot coupling feed, operating in both the GMS‐900 and GMS‐1800 frequency bands, is presented.
Wanyu Zhang, Qian Yang, Hang Yi, Jingchao Sheng, Ying Zhu, Yifan Yang   +5 more
doaj   +1 more source

Compact and Low-Profile Linear-/Circular-Polarization Dielectric Resonator Antennas With Extended Bandwidths

IEEE Open Journal of Antennas and Propagation, 2022
The dielectric resonator antenna (DRA) with wide bandwidth, compact size and low profile is considered as an attractive candidate for 5G wireless communications. However, most of the reported DRAs either have bulky volumes or have limited bandwidths.
Jie-Er Zhang, Qinfang Zhang, Weibin Kong, Wen-Wen Yang, Jian-Xin Chen   +4 more
doaj   +1 more source

Miniaturized top-metallized rectangular dielectric resonator antenna [PDF]

, 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, Márquez-Segura, Enrique, Pérez Escribano, Mario   +2 more
core  

Magnetoquasistatic resonances of small dielectric objects [PDF]

, 2019
A small dielectric object with positive permittivity may resonate when the free-space wavelength is large in comparison with the object dimensions if the permittivity is sufficiently high.
Forestiere, Carlo, Miano, Giovanni, Pascale, Mariano, Rubinacci, Guglielmo, Tamburrino, Antonello, Tricarico, Roberto, Ventre, Salvatore   +6 more
core   +3 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced 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, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Radiation Characteristics Enhancement of Dielectric Resonator Antenna Using Solid/Discrete Dielectric Lenses

Advanced Electromagnetics, 2015
The radiation characteristics of the dielectric resonator antennas (DRA) is enhanced using different types of solid and discrete dielectric lenses. One of these approaches is by loading the DRA with planar superstrate, spherical lens, or by discrete lens
H. A. E. Malhat, S. H. Zainud-Deen, W. M. Hassan, K. H. Awadalla   +3 more
doaj   +1 more source

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

EURASIP 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, Aodah Diamah, Mumtaz Al Mawaddah   +2 more
doaj   +1 more source

Split Ring Antennas and Their Application for Antenna Miniaturization

Sensors, 2023
This paper investigates the miniaturization capability of split ring array antennas embedded in a low-permittivity dielectric substrate, in comparison with the same-sized high-permittivity dielectric resonator antennas (DRAs).
Yanxia Liu, Lotfollah Shafai, Dustin Isleifson, Cyrus Shafai   +3 more
doaj   +1 more source