Results 11 to 20 of about 1,523,975 (218)

Compact Bent-Corner Orthogonal Beam Switching Antenna Module for 5G Mobile Devices [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
Typically, users engage with smartphones in either single-hand or dual-hand mode. To design antennas that operate at 28 GHz and have high pattern integrity for both modes of operation, an orthogonal beam switching module is required as a single phased ...
G. S. Karthikeya   +3 more
doaj   +1 more source

High-Efficiency Broadband Planar Array Antenna with Suspended Microstrip Slab for X-Band SAR Onboard Small Satellites

open access: yesSensors, 2021
In this paper, a high efficiency broadband planar array antenna is developed at X-band for synthetic aperture radar (SAR) on small satellites. The antenna is based on a multi-layer element structure consisting of two dielectric substrates made of Taconic
Kyei Anim   +3 more
doaj   +1 more source

A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures

open access: yesMicromachines, 2021
This paper presents dual-band high-gain subwavelength cavity antennas with artificial magnetic conductor (AMC) metamaterial microstructures. We developed an AMC metamaterial plate that can be equivalent to mu-negative metamaterials (MNMs) at two ...
Guang Lu   +7 more
doaj   +1 more source

High‐gain polarization conversion metasurface

open access: yesETRI Journal, 2019
A novel analytical method based on the cavity mode theory to design a metasurface (MS) is proposed in this study. We carefully analyzed the phase and amplitude characteristics of the incident wave and transmitted wave, and successfully designed a ...
Aixin Chen   +3 more
doaj   +1 more source

A Novel Non-Isolated High-Gain Non-Inverting Interleaved DC–DC Converter

open access: yesMicromachines, 2023
High-gain DC–DC converters are being drastically utilized in renewable energy generation systems, such as photovoltaic (PV) and fuel cells (FC). Renewable energy sources (RES) persist with low-level output voltage; therefore, high-gain DC–DC converters ...
Farhan Mumtaz   +4 more
doaj   +1 more source

Four-Port 38 GHz MIMO Antenna with High Gain and Isolation for 5G Wireless Networks

open access: yesSensors, 2023
In this paper, a 38 GHz 4-port multiple-input multiple-output (MIMO) antenna with considerable isolation and gain enhancement for 5G applications is introduced.
Ahmed A. Ibrahim   +3 more
doaj   +1 more source

High-Gain Wideband Metasurface Antenna With Low Profile

open access: yesIEEE Access, 2019
In this paper, a novel compact wideband and high-gain antenna based on metasurface is proposed. The antenna is an octagon with a side length of 32.3 mm and a height of 5.6 mm.
Hao Bai, Guang-Ming Wang, Ting Wu
doaj   +1 more source

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

open access: yesIEEE Access, 2023
Radial Line Slot Array (RLSA) antennas have appealing features including high gain and high efficiency combined with a low profile. Especially by highlighting their structural simplicity, RLSA antennas can be good competitors to reflector antennas if the
Onur Cumurcu   +2 more
doaj   +1 more source

A review for antenna performance enhancement using metasurface structures [PDF]

open access: yesJournal of Engineering Science and Military Technologies, 2021
Metasurfaces (MS) have recently attracted a lot of attention due to theirability to manipulate electromagnetic characteristics. The metasurfaceis constructed from two-dimensional scatterers (metallic and dielectric)which provide simplicity in fabrication
Mohamed El-Sewedy, Mahmoud Abdalla
doaj   +1 more source

A Gain Enhancement and Flexible Control of Beam Numbers Antenna Based on Frequency Selective Surfaces

open access: yesIEEE Access, 2018
This paper describes a beam-switching antenna with high gain and flexible control of beam numbers based on frequency selective surfaces (FSSs). The proposed antenna is composed of an omnidirectional monopole antenna, a hexagon FSS screen, and six ...
Jinxin Li   +3 more
doaj   +1 more source

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