Results 21 to 30 of about 4,090,602 (302)
A Dual-Band Patch Antenna for Pattern Diversity Application
IEEE Access, 2018 This paper presents a two-port dual-band pattern diversity patch antenna. The antenna consists of a rectangular patch, a rectangular ground plane, and an upright feeding network.
Xingyu Liu +4 more
doaj +1 more source
Wirelessly Automated Reconfigurable Antenna With Directional Selectivity
IEEE Access, 2017 In this paper, a frequency reconfigurable antenna system with a directional selectivity is presented. The reconfiguration of the antenna's radiation characteristics is wirelessly controlled through a mobile phone and a microcontroller. The antenna system
Youssef Tawk +5 more
doaj +1 more source
A Novel Calculation Method to Design Parasitic Decoupling Technique for Two Antennas
IEEE Access, 2020 In this paper, a systematic and calculation-based parasitic decoupling technique (PDT) is proposed to mitigate the mutual coupling between two closely coupled antennas.
Min Li +4 more
doaj +1 more source
An Ultra-Wide Band MIMO Antenna System with Enhanced Isolation for Microwave Imaging Applications
Micromachines, 2023 This paper introduces a novel two-port ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna system with enhanced isolation characteristics. The antenna, designed on a thin 0.787 mm RO5880 substrate, achieves a compact form factor of 52 × 26
Saad Hassan Kiani +4 more
doaj +1 more source
A Four Element Stringray-Shaped MIMO Antenna System for UWB Applications
Micromachines, 2023 This paper presents a CoPlanar-Waveguide (CPW)-fed stingray-shaped Ultra-WideBand (UWB) Multiple-Input–Multiple-Output (MIMO) antenna system designed for microwave imaging applications.
Hüseyin Şerif Savcı
doaj +1 more source
Exposing the Diversity of Multiple Infection Patterns [PDF]
Journal of Theoretical Biology, 2016 Abstract Natural populations often have to cope with genetically distinct parasites that can coexist, or not, within the same hosts. Theoretical models addressing the evolution of virulence have considered two within host infection outcomes, namely superinfection and coinfection.
Sofonea, Mircea T. +2 more
openaire +3 more sources
A Four-Element Antenna Array System With 15 Reconfigurable Radiation Patterns
IEEE Access, 2021 This paper describes the design of a planar antenna array system with pattern reconfiguration in the azimuthal plane. The antenna array system is designed based on four antenna units where each unit is composed of two printed Yagi-Uda elements that ...
Marios Patriotis +4 more
doaj +1 more source
Patterns of Diversity in Marine Phytoplankton
Science, 2010 Diversity Gradients Latitudinal gradients in species abundance, with relatively few occurring at the poles and many at the equator, are well known for macroorganisms. It is a matter of controversy, fueled by a lack of observational data, whether such gradients also occur among microorganisms. Barton
Barton, Andrew D. +4 more
openaire +3 more sources
Three-Dimensional Dual-Band Dielectric Resonator Antenna for Wireless Communication
IEEE Access, 2020 A three-dimensional dual-band dielectric resonator antenna, comprised of five rectangular dielectric resonator (RDR) radiating elements, is proposed for wireless communication applications.
Shailesh Mishra +4 more
doaj +1 more source
Geographic Patterns of mtDNA Diversity in Europe [PDF]
The American Journal of Human Genetics, 2000 Genetic diversity in Europe has been interpreted as a reflection of phenomena occurring during the Paleolithic ( approximately 45,000 years before the present [BP]), Mesolithic ( approximately 18,000 years BP), and Neolithic ( approximately 10,000 years BP) periods.
SIMONI L. +4 more
openaire +2 more sources