Results 21 to 30 of about 9,240 (223)

Implementation of Magnetoelectric Dipoles in Metasurfaces for 5G Applications

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
The well-known magnetoelectric dipole (ME-dipole) has huge adoption in antenna designs. In this paper, we manage to implement ME-dipoles in metasurfaces.
Xuexuan Ruan, Kai Wang, Qinyu Zhang
doaj   +1 more source

A Novel Densely Packed 4 × 4 MIMO Antenna Design for UWB Wireless Applications

open access: yesSensors, 2023
In this article, a compact 4-port UWB (Ultra-Wide Band) MIMO (Multiple Input Multiple Output) antenna is proposed. A low profile FR-4 substrate is used as a dielectric material with the dimensions of 58 × 58 mm2 (0.52λ × 0.52λ) at 2.8 GHz and a standard ...
Owais Khan   +5 more
doaj   +1 more source

Simulation Studies of Link Group in Elastic Optical Networks Used in Internet of Things Solutions

open access: yesTransport and Telecommunication, 2023
The elastic optical network (EON) solution is the most flexible in terms of allocation of resources for various traffic streams transported in core part (edge-cloud) of Internet of Things (IoT) networks.
Głąbowski Mariusz, Sobieraj Maciej
doaj   +1 more source

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

open access: yesIEEE Access, 2020
Energy harvesting (EH) or scavenging is recognized as harvesting energy from ambient energy sources in the surrounding environment. This paper reports a literature review on radio frequency (RF) EH using different metasurface/metamaterial structures ...
Abdulrahman Ahmed Ghaleb Amer   +4 more
doaj   +1 more source

Wideband, Low-Profile, Dual-Polarized Slot Antenna with an AMC Surface for Wireless Communications

open access: yesInternational Journal of Antennas and Propagation, 2016
A wideband dual-polarized slot antenna loaded with artificial magnetic conductor (AMC) is proposed for WLAN/WIMAX and LTE applications. The slot antenna mainly consists of two pairs of arrow-shaped slots along the diagonals of the square patch.
Wei Hu   +3 more
doaj   +1 more source

Design of an ultra-wideband energy harvesting rectifier antenna

open access: yesDianzi Jishu Yingyong, 2022
In order to make better use of RF energy of space radio waves, a broadband antenna covering resonant frequency from 1 to 14 GHz is designed, and a rectified antenna is designed for 2.4 GHz. The main part of the antenna is a circular patch.
Xue Liang, Bai Xue, Xu Leijun
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Radiation Characteristic Improvement of X-Band Slot Antenna Using New Multiband Frequency-Selective Surface

open access: yesInternational Journal of Antennas and Propagation, 2014
A new configuration of frequency-selective surfaces (FSSs) is designed and presented with multiresonance characteristics which covers all of the frequency domain of X-band from 8 to 12 GHz.
Elham Moharamzadeh
doaj   +1 more source

Designing a sub-wavelength array to change the direction of the radiation wave to a desired angle using variable Huygens surfaces [PDF]

open access: yesAUT Journal of Electrical Engineering
Since Huygens structures with phase shift lead to beam rotation, this manuscript discusses a phase shifter structure for the Huygens surface based on Tapered Slot Transition in the frequency range of 9.95-10.2 GHz using varactor diodes.
Sajedeh Zamani Noughabi   +2 more
doaj   +1 more source

Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner   +3 more
wiley   +1 more source

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