Results 11 to 20 of about 1,506,709 (263)

Design of 94GHz Dual-Polarization Antenna Fed by Diagonal Horn for Cloud Radars

open access: yesIEEE Access, 2022
In this paper, a 94 GHz dual-polarization high-isolation cassegrain antenna feed by a diagonal horn antenna is designed. The antenna consists of a D = 540 mm main reflector, sub-reflector, and dual-port dual-polarization diagonal horn feed antenna.
Jie Wang   +4 more
doaj   +1 more source

Absence of IgG antibodies among high-risk contacts of two confirmed cases of Crimean-Congo haemorrhagic fever in the autonomous region of Madrid (Spain)

open access: yesJournal of Infection and Public Health, 2020
Crimean-Congo haemorrhagic fever (CCHF) is a widely distributed tick-borne disease. In Spain, the disease has emerged as outbreak associated with high-risk exposures. Our goal was to evaluate the prevalence of antibodies against the CCHF virus (CCHFV) in
Pello Latasa   +19 more
doaj   +1 more source

Tachism: Tri-Port Antenna with Triple Notching Characteristic and High Isolation System for MIMO Application

open access: yesMathematics, 2022
A novel ultra-wideband (UWB) KAYI-shaped and common KITE-shaped ground plane tri-port antenna is proposed. The proposed research work has a small size of (30 × 30 × 1.6 mm3).
Shahid Basir   +4 more
doaj   +1 more source

Isolation for high-risk patients [PDF]

open access: yesPostgraduate Medical Journal, 1976
Summary Standard isolation accommodation provides adequate protection against the infectious diseases prevalent in the U.K. but higher standards are necessary for more dangerous infections imported from overseas. These may be provided reasonably cheaply by modifying existing wards but staff are still exposed to risk.
openaire   +2 more sources

A Graphene-Assembled Film Based MIMO Antenna Array with High Isolation for 5G Wireless Communication

open access: yesApplied Sciences, 2021
With the development of 5G, Internet of Things, and smart home technologies, miniaturized and compact multi-antenna systems and multiple-input multiple-output (MIMO) antenna arrays have attracted increasing attention.
Rongguo Song   +7 more
doaj   +1 more source

A Compact Dual Circularly Polarized Antenna With Wideband Operation and High Isolation

open access: yesIEEE Access, 2020
This paper presents a dual-sense circularly polarized (CP) antenna with compact size, high isolation, and wideband characteristics. The antenna consists of a microstrip patch, an array of parasitic metal plates positioned around the patch, and a 90 ...
Huy Hung Tran   +2 more
doaj   +1 more source

Dual-Band MIMO Antenna with Enhanced Isolation for 5G NR Application

open access: yesMicromachines, 2022
A two-port multiple-input and multiple-output (MIMO) antenna with dual-band characteristics operating at the fifth-generation (5G) new radio (NR) sub-6 GHz n7/n38/n41/n79 bands is proposed.
Shuqi Xi   +4 more
doaj   +1 more source

Compact, Isolated High-velocity Clouds [PDF]

open access: yes, 2004
26 pages, 8 (low res.) png figs., to appear in the book "High Velocity Clouds" Eds.
Burton, W. B., Braun, R., de Heij, V.
openaire   +2 more sources

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

A High Isolation, Low-Profile, Triple-Port SIW Based Annular Slot Antenna for Millimeter-Wave 5G MIMO Applications

open access: yesIEEE Access, 2022
This paper presents a compact, triple-port, millimeter-wave (mm-wave) substrate-integrated waveguide (SIW) based annular slot antenna. The presented antenna was fabricated on a single dielectric layer, 30mil TLY-5 substrate with a standard PCB process ...
Enis Kobal   +3 more
doaj   +1 more source

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