Results 31 to 40 of about 53,947 (297)

Smart Antenna Systems

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2022
Abstract: Smart antennas have received increasing interest for improving the performance of wireless radio systems. These systems of antennas include a large number of techniques that attempt to enhance the received signal, suppress all interfering signals, and increase capacity, in general. The main purpose of this article is to provide an overview of
openaire   +1 more source

MIMO Antennas for Smart 5G Devices

open access: yesIEEE Access, 2018
This paper presents the design of $8 \times 8$ multiple-input multiple-output (MIMO) antennas for future 5G devices, such as smart watches and dongles.
Nosherwan Shoaib   +5 more
doaj   +1 more source

Infrastructural inequality: exploring the emergence of digital classes in the Metropolitan Area of Santiago, Chile

open access: yesBulletin of Geography. Socio-Economic Series, 2023
This paper examines the digital divide in the city of Santiago, Chile. The research uses the density of mobile phone antennas as a proxy for digital infrastructure. The findings show that there is a strong correlation between the density of mobile phone
Juan Correa   +4 more
doaj   +1 more source

Novel Meta-Fractal Wearable Sensors and Antennas for Medical, Communication, 5G, and IoT Applications

open access: yesFractal and Fractional
Future communication, 5G, medical, and IoT systems need compact, green, efficient wideband sensors, and antennas. Novel linear and dual-polarized antennas for 5G, 6G, medical devices, Internet of Things (IoT) systems, and healthcare monitoring sensors ...
Albert Sabban
doaj   +1 more source

Pattern Reconfigurable Antennas at Millimeter-Wave Frequencies: A Comprehensive Survey

open access: yesIEEE Access, 2022
Millimeter-wave bands (around 28, 38, 60, and 73 GHz) are anticipated to play a decisive role in the hosting of future wireless systems. The necessity of smart antennas to adaptively meet the requirements of the wireless links calls for new pattern ...
H. Pablo Zapata Cano   +4 more
doaj   +1 more source

Transmission radius control in wireless Ad Hoc networks with smart antennas [PDF]

open access: yes, 2010
In this paper, we present a model to analyze the performance of three transmission strategies with smart antennas, i.e. directional antennas with adjustable transmission power.
Huang, F, Leung, KC, Li, VOK
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

The Method of Maximum Power Transmission Efficiency for the Design of Antenna Arrays

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
Various methods have been proposed to control the electromagnetic fields in the near-or far-field region, one of which is to use antenna arrays. This paper reviews a technique, called the method of maximum power transmission efficiency (MMPTE), for the ...
Wen Geyi
doaj   +1 more source

Optically Transparent Antennas and Filters [PDF]

open access: yes, 2017
As society continues to increase its demand for wireless network access, more antennas, base stations, and network access points is a must. By integrating these antennas into existing infrastructure, such as buildings, cars, and street lights, network ...
Guzman, Michelle   +3 more
core   +1 more source

Whole‐Body Pattern of Muscle Degeneration and Progression in Sarcoglycanopathies

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize whole‐body intramuscular fat distribution pattern in patients with sarcoglycanopathies and explore correlations with disease severity, duration and age at onset. Methods Retrospective, cross‐sectional, multicentric study enrolling patients with variants in one of the four sarcoglycan genes who underwent whole‐body ...
Laura Costa‐Comellas   +39 more
wiley   +1 more source

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