Results 31 to 40 of about 23,483,289 (298)
IEEE Transactions on Antennas and Propagation, 2021 A planar dual-band shared-aperture array antenna for the ${K}$ -/Ka-band low Earth orbit (LEO) satellite communication is presented in this article. Substrate integrated coaxial line (SICL)-fed bow-tie transverse slots and substrate integrated waveguide
Zijun Guo +4 more
semanticscholar +1 more source
High-Isolation Eight-Element MIMO Array for 5G Smartphone Applications
IEEE 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 Deployable Wideband Differential-Fed Dual-Polarized Patch Antenna Array
IEEE Open Journal of Antennas and Propagation, 2023 In this paper, a deployable wideband differential-fed dual-polarized high-isolation patch antenna array is proposed. To achieve dual polarization, every element has two pairs of differential ports.
Ankang Liu +3 more
doaj +1 more source
High efficiency single quantum well graded-index separate-confinement heterostructure lasers fabricated with MeV oxygen ion implantation [PDF]
, 1989 Single quantum well AlGaAs/GaAs graded-index separate-confinement heterostructure lasers have been fabricated using MeV oxygen ion implantation plus optimized subsequent thermal annealing.
Chen, H. Z. +6 more
core +1 more source
Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation
IEEE Open Journal of Antennas and Propagation, 2022 In this paper, the impact of amplitude and phase imbalance on a proposed dual differential fed patch antenna is analyzed in the context of system effective reflection coefficient and axial ratio (AR).
Wenyu Zhou +6 more
doaj +1 more source
DESIGN OF MIMO ANTENNA FOR WIRELESS COMMUNICATION APPLICATIONS
Journal of Engineering and Sustainable Development, 2022 The development of a new compact Ultra Wideband (UWB) antenna. The main advantages of the proposed array configuration are that it requires no isolation/decoupling circuit between the elements of the MIMO array.
Rasha Basil Nassir +1 more
doaj
IEEE Access, 2018 A modified direct feeding structure is proposed in this paper to realize a compact ( $45 \times 45$ mm2) wideband dual-polarized antenna with high isolation (33 dB) and low cross-polarization (30 dB).
Yaohui Zhang +3 more
doaj +1 more source
Design of Compact and High Isolation Dual-Polarized Antenna Array via Plasmonic Meta-Structure
IEEE Open Journal of Antennas and Propagation, 2023 We propose a compact and high isolation dual-polarized antenna array based on plasmonic meta-structure operating at 2.58 GHz. The compact principle of the dual-polarized antenna is mainly based on spoof surface plasmon polariton (SSPP) radiation patch to
Zhang Wen Cheng +9 more
doaj +1 more source
Broad application of a simple and affordable protocol for isolating plant RNA [PDF]
, 2015 BACKGROUND: Standard molecular biological methods involve the analysis of gene expression in living organisms under diverse environmental and developmental conditions. One of the most direct approaches to quantify gene expression is the isolation of RNA.
Ana Arruabarrena +8 more
core +1 more source
A Multi-Port Pattern Diversity Antenna With High Isolation
IEEE Open Journal of Antennas and Propagation, 2023 A pattern-diversity antenna with 7 ports is proposed for multiple-input multiple-output (MIMO) applications. Orthogonal modes are utilized to achieve high isolation among all 7 ports in a relatively compact shared volume.
Nghia Nguyen-Trong, Christophe Fumeaux
doaj +1 more source