Results 31 to 40 of about 357,995 (293)

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

Circularly polarized printed dual port MIMO antenna with polarization diversity optimized by machine learning approach for 5G NR n77/n78 frequency band applications

open access: yesScientific Reports, 2023
In this communication, a planar dual port multiple input multiple output antenna of size 1.2λ_0 × 0.6λ_0 × 0.008λ_0 with LHCP/RHCP features is reported for the fifth-generation new radio n77/n78 sub-6 GHz wireless applications band.
A. Dwivedi   +5 more
semanticscholar   +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

Axially Uniform Magnetic Field-Modulation Excitation for Electron Paramagnetic Resonance in Rectangular and Cylindrical Cavities by Slot Cutting [PDF]

open access: yes, 2017
In continuous-wave (CW) Electron Paramagnetic Resonance (EPR) a low-frequency time-harmonic magnetic field, called field modulation, is applied parallel to the static magnetic field and incident on the sample.
Hyde, James S   +2 more
core   +2 more sources

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

Gradient Index Metamaterial Based on Slot Elements

open access: yes, 2010
We present a gradient-index (GRIN) metamaterial based on an array of annular slots. The structure allows a large variation of the effective refractive index under normal-to-plane incidence and thus enables the construction of GRIN devices consisting of ...
Beigang, Rene   +4 more
core   +1 more source

A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices [PDF]

open access: yes, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEEA reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied.
AbuTarboush, H.F.   +13 more
core   +2 more sources

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

Online Reinforcement Learning for Dynamic Multimedia Systems

open access: yes, 2009
In our previous work, we proposed a systematic cross-layer framework for dynamic multimedia systems, which allows each layer to make autonomous and foresighted decisions that maximize the system's long-term performance, while meeting the application's ...
Mastronarde, Nicholas   +1 more
core   +1 more source

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