Results 51 to 60 of about 766,280 (111)

Circularly Polarized Dielectric Resonator Antenna Arrays with Fractal Cross-Slot-Coupled DRA Elements

International Journal of Antennas and Propagation, 2017
In the design of circularly polarized (CP) dielectric resonator antenna (DRA) arrays, the regular-shaped DRAs with simple feeding configurations are mostly used as array elements to make the design procedure more efficient.
Jia-Hong Lin, Wen-Hui Shen, Zhi-Dong Shi, Shun-Shi Zhong   +3 more
doaj   +1 more source

A Dielectric Resonator Antenna with Enhanced Gain and Bandwidth for 5G Applications

Sensors, 2020
In this paper, a dielectric resonator antenna (DRA) with high gain and wide impedance bandwidth for fifth-generation (5G) wireless communication applications is proposed. The dielectric resonator antenna is designed to operate at higher-order T E &#
Irfan Ali, Mohd Haizal Jamaluddin, Abinash Gaya, Hasliza A. Rahim   +3 more
doaj   +1 more source

High‐Performance Multiport Antenna With Frequency Selective Surface for 5G Ka‐Band Applications

Radio Science, Volume 60, Issue 11, November 2025.
Abstract This paper presents a novel multiport antenna tailored for 5G millimeter‐wave (mm‐Wave) applications. The proposed design features orthogonally arranged radiating elements to ensure compactness with an overall footprint of just 20 × 26 mm2.
Mohammad Alibakhshikenari, Iftikhar ud Din, Nouf Abd Elmunim, Bal S. Virdee, Sunil Kumar, Sadiq Ullah, Muhammad Akmal Chaudhary, Nisar Ahmad Abbasi, Chan Hwang See, Ernesto Limiti, Takfarinas Saber   +10 more
wiley   +1 more source

Experimental investigation of the effects of polarization on the measured radiation efficiency of a dielectric resonator antenna [PDF]

, 2008
©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any ...
Almpanis, G., Benedickter, H., Vahldieck, R., Fumeaux, C., Lai, Q.   +4 more
core  

Sol–Gel Thin Films for the Protection of Ancient Glass Artifacts: A Performance Comparison Between Inorganic and Hybrid Silica Compositions

Advanced Materials Interfaces, Volume 12, Issue 12, June 23, 2025.
This study explores the development of sol–gel coatings for archaeological glass conservation. By formulating silica‐based solutions with low acid concentrations and applying them via dip coating, protective films are prepared at room temperature. Analysis reveals that hybrid coatings with methyl and octyl groups provide superior protection against ...
Stefano Centenaro, Elti Cattaruzza, Antonella Glisenti, Leonardo Puppulin, Giulia Franceschin, Arianna Traviglia   +5 more
wiley   +1 more source

Gallium arsenide field effect transistors microstrip integrated circuit dielectric resonator oscillators [PDF]

, 1988
Bibliography: leaves 175-177.This thesis is concerned with Gallium Arsenide Metal Semiconductor Field Effect Transistor Microstrip Integrated Circuit Dielectric Resonator Oscillators (GaAs MESFET MIC DROs) - the different types, their design and their ...
Crouch, David Andrew
core   +1 more source

3D‐printed heterogeneous isotropic–anisotropic dielectric resonator for singly fed dual‐band circularly polarised antennas

IET Microwaves, Antennas & Propagation
The design of three‐dimensional (3D)‐printed heterogeneous ceramics exhibiting isotropic and anisotropic dielectric permittivities at microwave frequencies is studied for dielectric resonator antenna (DRA) applications.
Bruno deAraùjo, Christophe Morlaas, Romain Pascaud, Alexandre Chabory, Marjorie Grzeskowiak, Gautier Mazingue   +5 more
doaj   +1 more source

Design of Biodegradable Quadruple-shaped DRA for WLAN/Wi-Max applications

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
A novel Quadruple-shaped Dielectric Resonator Antenna (DRA) excited by a coaxial feed is investigated. The dielectric used for investigation is biodegradable polymer based dielectric material having a dielectric constant (εr) of 3.45 and dielectric loss ...
Pramod Kumar, Santanu Dwari, Utkarsh, Jitendra Kumar   +3 more
doaj   +1 more source

Circular Polarized Dielectric Resonator Antenna for Portable RFID Reader Using a Single Feed

International Journal of Engineering Business Management, 2012
A new design of circular polarized elliptical dielectric resonator antenna (DRA) with single feed for handheld radio frequency identification (RFID) reader is presented.
Hend A. Malhat, Saber H. Zainud-Deen, Kamal H. Awadalla   +2 more
doaj   +1 more source

Enhancing Passive Radiative Cooling Films with Hollow Yttrium‐Oxide Spheres Insights from FDTD Simulation

Macromolecular Rapid Communications, Volume 46, Issue 3, February 2025.
The figure showcases a daytime radiative cooling film that uses hollow yttrium oxide spheres within a polydimethylsiloxane matrix. This film reflects sunlight and emits long‐wave infrared radiation, effectively cooling the surface under direct sunlight. FDTD simulations confirm the scattering efficiency of the hollow spheres, highlighting their role in
Jeehoon Yu, Chanil Park, Byeongjin Kim, Sohyeon Sung, Hyun Kim, Jaeho Lee, Yong Seok Kim, Youngjae Yoo   +7 more
wiley   +1 more source