Results 81 to 90 of about 67,964 (307)
Magneto-Electric Dipole Antenna Arrays [PDF]
, 2014 A planar magneto-electric (ME) dipole antenna array is proposed and demonstrated by both full-wave analysis and experiments. The proposed structure leverages the infinite wavelength propagation characteristic of composite right/left-handed (CRLH ...
Caloz, Christophe +2 more
core +3 more sources
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
IEEE Access, 2018 This paper presents a wideband antenna with omnidirectional radiation pattern for wireless capsule endoscopy (WCE) systems. The proposed antenna radiates as slot structure formed between a central copper cylinder and a copper strip attached to the ...
Zhu Duan +3 more
doaj +1 more source
Terahertz plasmonic laser radiating in an ultra-narrow beam
, 2016 Plasmonic lasers (spasers) generate coherent surface-plasmon-polaritons (SPPs) and could be realized at subwavelength dimensions in metallic cavities for applications in nanoscale optics. Plasmonic cavities are also utilized for terahertz quantum-cascade
Khanal, Sudeep +3 more
core +1 more source
Radiation pattern of two identical emitters driven by a Laguerre-Gaussian beam: An atom nanoantenna [PDF]
, 1999 We study the directional properties of a radiation field emitted by a geometrically small system composed of two identical two-level emitters located at short distances and driven by an optical vortex beam, a Laguerre-Gaussian beam which possesses a ...
Lembessis, Vassilis E. +4 more
core +4 more sources
Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland +5 more
wiley +1 more source
A low‐profile and wide‐beamwidth microstrip patch antenna using parasitic patch elements
Electronics LettersThis paper presents a low‐profile patch antenna with dual‐axis wide‐beam characteristics. The antenna includes a microstrip patch antenna and four parasitic patch elements. The study demonstrates that both the E‐plane and H‐plane beams can be extended by
Maodudul Hasan, Masaya Tamura
doaj +1 more source
DIPOLE ANTENNAS WITH A SECTOR-SHAPED RADIATION PATTERN [PDF]
Radio Physics and Radio AstronomySubject and Purpose. The directivity characteristics of a dipole antenna when it is placed above and parallel to a perfectly conducting screen of rectangular shape are considered, aiming to theoretically study dipole antennas with sector-shaped radiation
M. M. Gorobets +3 more
doaj +1 more source
Active beamforming network design [PDF]
, 2008 This paper describe the design and implementation of multi beam antenna array using active beam forming network for wireless local area networks (WLAN) operating at 2.4 GHz band frequency.
A. Rahim, Mohamad Kamal +2 more
core
, 2017 In this paper, we implement hybrid Woodward-Lawson-Neural Networks and weighted Fourier method to synthesize antenna arrays. The neural networks (NN) is applied here to simplify the modeling of MIMO antenna arrays by assessing phases. The main problem is
Bouallegue, Ammar +5 more
core +1 more source