Results 31 to 40 of about 766,280 (111)

Strong Mode Coupling and Maximum Directional Absorption in Reciprocal Bianisotropic Metasurfaces

open access: yesNanophotonics, Volume 15, Issue 12, 25 June 2026.
Symmetry breaking in q‐BIC dielectric metasurfaces enables strong electromagnetic coupling between electric and magnetic modes, leading to their hybridization and Rabi‐like splitting. This mechanism produces pronounced reciprocal bianisotropy and dual‐band asymmetric absorption under opposite illumination directions, offering a compact framework for ...
L. M. Máñez‐Espina   +3 more
wiley   +1 more source

Broadband, High Gain, Narrow Width Rectangular Dielectric Resonator Antenna with Air Gap

open access: yesJournal of Electronic Science and Technology, 2019
The broadband, narrow width, rectangular dielectric resonator antenna (RDRA) of aluminum nitride (εr=8.6) was designed and the effect of inclusion of air gap at the bottom of the dielectric resonator antenna (DRA), above the ground plane, was ...
Ankit Kumar Roy, Sukla Basu
doaj   +1 more source

Design and optimization of circularly polarized dielectric resonator antenna array based on Al2O3 ceramic

open access: yesAlexandria Engineering Journal, 2023
A comprehensive design of an ultra-broadband circularly polarized (CP) dielectric resonator antenna (DRA) array operating in the C-band for fifth-generation (5G) communication systems is presented in this paper.
Hao Pan, Yu-Peng Li, Hai-Feng Zhang
doaj   +1 more source

Auger Parameter Analysis for TiN and AlN Thin Films via Combined In Situ XPS and HAXPES

open access: yesSurface and Interface Analysis, Volume 58, Issue 6, Page 387-399, June 2026.
ABSTRACT Auger parameter analysis provides in‐depth information about electronic and chemical bonding properties of TiN and AlN thin films, which are relevant across a wide range of technologies. Meaningful interpretation and analysis of Auger parameter of these materials have been hindered due to, among other reasons, the absence of reliable ...
O. V. Pshyk   +3 more
wiley   +1 more source

Dielectric Resonator Antenna (DRA) for Wireless Application [PDF]

open access: yes, 2008
This paper describes a simple design on dielectric resonator antenna using disk shape. The dielectric resonator antenna (DRA) consists of high dielectric constant materials, high quality factors and mounted on a grounded dielectric substrate of ...
Abd Aziz, Mohamad Zoinol Abidin   +1 more
core   +1 more source

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

open access: yesAdvanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk   +2 more
wiley   +1 more source

Additive Manufacturing of Broadband Dielectric Resonator Antennas Using Graded Permittivity and Modal Analysis

open access: yesElectronics Letters, Volume 62, Issue 1, January/December 2026.
This study enhances the bandwidth of dielectric resonator antennas (DRAs) by introducing a linearly graded permittivity profile. Characteristic Mode Analysis reveals that this approach broadens the modal distribution and extends the dominant resonant mode bandwidth.
Romain Ammar   +8 more
wiley   +1 more source

Metamaterial inspired square gap defected ground structured wideband dielectric resonator antenna for microwave applications

open access: yesHeliyon, 2023
A metamaterial inspired dielectric resonator antenna (DRA) with square gap defected ground structure is proposed in the present work. Antenna has wideband characteristics with coverage of several commercial communication applications of Wi-Fi, WLAN, and ...
Ch Raghavendra   +2 more
doaj   +1 more source

Wideband and Frequency‐Reconfigurable Loop Antenna for Sub‐6 GHz Applications

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This work tackles the longstanding bandwidth limitation of loop antennas by introducing a compact, symmetrical design that integrates a microstrip balun and periodic varactor loading. Unlike existing methods that often compromise symmetry or beam control, the proposed structure achieves both wide impedance bandwidth and frequency reconfigurability ...
Amir Jafargholi, Romain Fleury
wiley   +1 more source

Aperture Coupled Dielectric Resonator Antenna Embedded in a Secondary Substrate for Mechanical Firmness [PDF]

open access: yesRadioengineering, 2018
An aperture coupled rectangular dielectric resonator antenna (RDRA) is proposed where high permittivity radiating element is embedded on a comparatively low permittivity secondary substrate material (here FR4 is used).
S. Ballav, S. K. Parui
doaj  

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