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Design of a Small Array Antenna with an Extended Cavity Structure for Wireless Power Transmission [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
This paper proposes a design of a small array antenna with an extended cavity structure for wireless power transmission. The proposed array element consists of a square radiating loop, which is designed to resonate at 5.8 GHz, and an extended cavity ...
Jun Hur, Hosung Choo
doaj   +1 more source

Research progress and development suggestions on aeronautical electromagnetic metamaterial

open access: yesJournal of Aeronautical Materials, 2023
Electromagnetic metamaterial is an artificial composite composed of periodic subwavelength microstructure,which has a strong conduction regulation or absorption effect on electromagnetic wave,and it has been widely studied in the field of stealth design ...
JING Zhi, ZHANG Jian
doaj   +1 more source

Role of supersaturated Al-C phases in mechanical properties of Al/fullerene composites

open access: yesScientific Reports, 2021
We investigated the reinforcing effect of supersaturated Al-C phases on the mechanical properties of Al/C60 composites produced via powder metallurgy followed by thermal treatment.
Seungjin Nam   +5 more
doaj   +1 more source

Advanced Processing of 3D Computational Microwave Polarimetry Using a Near-Field Frequency-Diverse Antenna

open access: yesIEEE Access, 2020
Polarimetry is typically restricted to far-field characterization of a target using beam-like waves, which results in a 2 x 2 scattering matrix representation under two orthogonal in-plane polarization bases.
Rixi Peng   +3 more
doaj   +1 more source

A Dual-Polarized Reconfigurable Reflectarray Antenna Based on a Symmetrically Rotated Sub-Array

open access: yesIEEE Access, 2023
This paper proposes a novel method for designing a dual-polarized reconfigurable reflectarray antenna (RRA) based on a symmetrically rotated sub-array operating in a single-band.
Sun-Gyu Lee, Jeong-Hae Lee
doaj   +1 more source

Development and prospects of metamaterial in wireless power transfer

open access: yesIET Power Electronics, 2021
As a unique group of advanced artificial materials, metamaterials have found many interesting applications in various devices due to the ability to control electromagnetic fields.
Xiutao Huang   +5 more
doaj   +1 more source

Research on Low-Frequency Noise Control Based on Fractal Coiled Acoustic Metamaterials

open access: yesShock and Vibration, 2022
In this paper, a self-similar fractal coiled acoustic metamaterial is designed for the low-frequency noise control problem by combining a perforated plate and a coiled back cavity structure.
Hongyu Cui, Chengtao Liu, Haoming Hu
doaj   +1 more source

Investigation of frequency-dependent permittivity tunability of P(VDF-TrFE) metal-ferroelectric-metal capacitor

open access: yesResults in Physics, 2019
We report on the tunability of the frequency-dependent permittivity of a metal-ferroelectric-metal (MFM) capacitor fabricated with P(VDF-TrFE), an organic ferroelectric material.
S.-W. Han   +4 more
doaj   +1 more source

Development of diverse coding metamaterial structure for radar cross section reduction applications

open access: yesScientific Reports, 2022
Despite their widespread use for performing advanced electromagnetic properties, metamaterial suffers from several restrictions in this technological era.
Tayaallen Ramachandran   +4 more
doaj   +1 more source

A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties

open access: yesMaterials & Design, 2021
An auxetic metamaterial is a type of mechanical metamaterial that has a negative Poisson's ratio. Most auxetic metamaterials are truss-based or originate from Boolean operations of simple geometries.
Xiaoyang Zheng   +2 more
doaj   +1 more source

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