Results 1 to 10 of about 92,771 (249)

Wireless technology is an environmental stressor requiring new understanding and approaches in health care

open access: yesFrontiers in Public Health, 2022
Electromagnetic signals from everyday wireless technologies are an ever-present environmental stressor, affecting biological systems. In this article, we substantiate this statement based on the weight of evidence from papers collated within the ORSAA ...
Julie E. McCredden   +4 more
doaj   +1 more source

Waveguide Manufacturing Technologies for Next-Generation Millimeter-Wave Antennas

open access: yesMicromachines, 2021
Some recent waveguide-based antennas are presented in this paper, designed for the next generation of communication systems operating at the millimeter-wave band.
Lucas Polo-López   +7 more
doaj   +1 more source

Dual-Mode Conical Horn Antenna with 2-D Azimuthal Monopulse Pattern for Millimeter-Wave Applications

open access: yesSensors, 2023
In this paper, a novel concept of a three-dimensional full metal system including a Dual-Mode Converter (DMC) network integrated with a high-gain Conical Horn Antenna (CHA) is presented.
Asrin Piroutiniya   +4 more
doaj   +1 more source

On the Use of Quadrilateral Meshes for Enhanced Analysis of Waveguide Devices with Manhattan-Type Geometry Cross-Sections

open access: yesMathematics, 2022
This work addresses the suitability of using structured meshes composed of quadrilateral finite elements, instead of the classical unstructured meshes made of triangular elements.
Mohamad Hosein Rasekhmanesh   +3 more
doaj   +1 more source

Beam Steering 3D Printed Dielectric Lens Antennas for Millimeter-Wave and 5G Applications

open access: yesSensors, 2023
Two types of cost-efficient antennas based on dielectric gradient index dielectric lens have been designed for 5G applications at 28 GHz. The first is a linearly polarized flat lens antenna (LP-FLA) for terrestrial 5G communications.
Asrin Piroutiniya   +7 more
doaj   +1 more source

Characterization of Joints between Carbon Fiber Composite Parts Using a Microstrip Transmission Line Method

open access: yesSensors, 2021
The electromagnetic performance of aerial platforms, which are composed mostly of nonmetallic materials, is a subject of great interest at present time.
Borja Plaza   +2 more
doaj   +1 more source

Multipactor Threshold Estimation Techniques Based on Circuit Models, Electromagnetic Fields, and Particle Simulators

open access: yesIEEE Journal of Microwaves, 2022
Multipactor has become a keylimiting factor of the final performance of satellite communication systems, due to the increase in power levels and/or operating frequency bands.
Pablo Gonzalez   +11 more
doaj   +1 more source

Angle-Based Parametrization with Evolutionary Optimization for OESCL-Band Y-Junction Splitters

open access: yesPhotonics, 2023
The design of passive photonic devices based on geometry optimization can lead to energy-efficient, small-footprint, and fabrication-ready geometries. In this work, we propose an angle-based parametrization method to optimize Y-junction splitters based ...
Roy Prosopio-Galarza   +5 more
doaj   +1 more source

Numerical Study on the Orthogonality of the Fields Radiated by an Aperture

open access: yesMathematics, 2023
This work studies the orthogonality of the fields radiated by the different modes of a radiating aperture. Waveguide modes exhibit an orthogonality property at the aperture cross-section that can be used to simplify calculations.
Lucas Polo-López   +4 more
doaj   +1 more source

Fully Planar Dual-Polarized Broadband Antenna for 3G, 4G and Sub 6-GHz 5G Base Stations

open access: yesIEEE Access, 2020
A fully planar dual polarized radiating element with internal embedded coupled dipoles is presented in this paper. The inclusion of these elements allows achieving three different goals: firstly, an extension of the bandwidth towards lower frequencies ...
Sergio Martin-Anton   +1 more
doaj   +1 more source

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