Results 1 to 10 of about 325,108 (297)

Triband Omnidirectional Circularly Polarized Dielectric Resonator Antenna with Top-Loaded Alford Loop

open access: yesInternational Journal of Antennas and Propagation, 2014
A triband omnidirectional circularly polarized dielectric resonator antenna with a top-loaded modified Alford loop for GSM, WLAN, and WiMAX applications is proposed. Fed by an axial probe, the DRA (dielectric resonator antenna) radiates like a vertically
Chunxia Cheng   +3 more
doaj   +1 more source

SIW Multibeam Antenna Array at 30 GHz for 5G Mobile Devices

open access: yesIEEE Access, 2019
This paper presents a new phased array of substrate integrated waveguide (SIW) monopoles, characterized by simple structure, high gain, and large coverage, resulting as a good candidate for next 5G mobile handsets.
Carla Di Paola   +3 more
doaj   +1 more source

A Dual-Band Polarization-Insensitive Frequency Selective Surface for Electromagnetic Shielding Applications

open access: yesSensors
This paper presents a novel polarization-insensitive dual-band frequency-selective surface (FSS)-based electromagnetic shield. The miniaturized FSS unit cell consists of a modified Jerusalem crossed loop and a corner-modified square loop.
Muhammad Idrees   +3 more
doaj   +1 more source

High-Isolation Eight-Element MIMO Array for 5G Smartphone Applications

open access: yesIEEE Access, 2019
In this paper, an eight-element MIMO array for 5G smartphone applications in the 3.45-GHz band (3.3-3.6 GHz) is presented. The array consists of two types of four-antenna arrays (U-shaped and L-shaped coupled-fed loop elements), which are symmetrically ...
Wen Jiang, Bo Liu, Yangqiang Cui, Wei Hu
doaj   +1 more source

Optical Antennas [PDF]

open access: yesInternational Journal of Optics, 2012
N. Bonod   +3 more
openaire   +2 more sources

Antenna Measurement

open access: yes, 2010
Currently it is possible to measure all the characteristics of an antenna with a good accuracy. Far-field ranges do not have a very good accuracy, due to parasitic reflections for the outdoor ranges and because of the limited distance between the source antenna and the tested antenna for the indoor ranges.
openaire   +4 more sources

Additively Manufactured Perforated Superstrate to Improve Directive Radiation Characteristics of Electromagnetic Source

open access: yesIEEE Access, 2019
Additively manufactured perforated superstrate (AMPS) is presented to realize directive radio frequency (RF) front-end antennas. The superstrate comprises spatially distributed dielectric unit-cell elements with square perforations, which creates a pre ...
Touseef Hayat   +3 more
doaj   +1 more source

A Design of a Small-Aperture Low-Profile Omnidirectional Conformal Antenna

open access: yesMicromachines
In this article, a small-aperture, low-profile, and omnidirectional conformal antenna is proposed which can be utilized on space-limited equipment platforms such as airplanes, ships, and vehicles.
Jieying Bai   +4 more
doaj   +1 more source

Dual-Polarized Magneto-Electric Dipole for 5G 28-GHz Phased Array Applications

open access: yesIEEE Open Journal of Antennas and Propagation
A low-profile dual-polarized magneto electric (ME) dipole antenna configuration implemented on standard multilayer PCB technology is here reported. The proposed radiator is conceived for dual-polarized 28 GHz 5G phased array applications.
Giuseppe Scalise   +5 more
doaj   +1 more source

Miniaturized High-Isolation Dual-Frequency Orthogonally Polarized Patch Antenna Using Compact Electromagnetic Bandgap Filters

open access: yesInternational Journal of Antennas and Propagation, 2014
A miniaturized dual-frequency dual-polarization microstrip patch antenna with high isolation between receiving and transmitting ports (operating at 2.1 GHz for receiving and at 2.5 GHz for transmitting) is presented in this paper.
Chunxia Cheng   +3 more
doaj   +1 more source

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