Results 71 to 80 of about 240,167 (319)

Highly-Integrated Dual-Polarized Multibeam mm-Wave Array Antenna With Ultra-High Tx-Rx Isolation for In-Band Full Duplex (IBFD) Application

open access: yesIEEE Open Journal of Antennas and Propagation
This article analyzes the current development status and requirements of wireless communication technology, and proposes a multibeam MM-wave antenna array with high-isolation for in-band full duplex (IBFD) wireless integrated access and backhaul ...
Tong Wu   +4 more
doaj   +1 more source

Isolation Defines Identity: Functional Consequences of Extracellular Vesicle Purification Strategies

open access: yesAdvanced Healthcare Materials, EarlyView.
Four extracellular vesicle purification strategies are compared using ovarian‐cancer ascites and ES‐2 cell supernatants. A novel workflow links purification to function by combining particle‐normalized proteomics with matched cell‐free and cell‐based assays.
Christian Preußer   +10 more
wiley   +1 more source

A 2-D Fully Polarized Van Atta Array Based on Wide-Beam Tri-Polarized Antennas

open access: yesMicromachines
This paper proposes a 2-D fully polarized Van Atta array, which consists of four tri-polarized antenna elements. The tri-polarized antenna element comprises a monopole antenna and a low-profile microstrip antenna that widens the beam by folding four ...
Jicheng Pan   +3 more
doaj   +1 more source

Magnetic Field‐Driven Spin State Transformation in Promoting the Catalytic Activity of Doped Single‐Atom for Hydrogen Evolution Reaction

open access: yesAdvanced Materials, EarlyView.
A ferromagnetic RuSAs/Ni2P@Fe3O4 material is designed via a synergistic strategy of single‐atom doping and magnetic field‐driven spin‐state transformation. This strategy introduces new Ru single‐atom active sites for the hydrogen evolution reaction and facilitates the transition of Fe3+ (3d t2g) low‐spin electrons to a high‐spin state (3d eg ...
Chenjing Wang   +9 more
wiley   +1 more source

Unimodular Multi-Input Multi-Output Waveform and Mismatch Filter Design for Saturated Forward Jamming Suppression

open access: yesSensors
Forward jammers replicate and retransmit radar signals back to generate coherent jamming signals and false targets, making anti-jamming an urgent issue in electronic warfare.
Xuan Fang, Dehua Zhao, Liang Zhang
doaj   +1 more source

Recent Progress on Flexible Multimodal Sensors: Decoupling Strategies, Fabrication and Applications

open access: yesAdvanced Materials, EarlyView.
In this review, we establish a tripartite decoupling framework for flexible multimodal sensors, which elucidates the underlying principles of signal crosstalk and their solutions through material design, structural engineering, and AI algorithms. We also demonstrate its potential applications across environmental monitoring, health monitoring, human ...
Tao Wu   +10 more
wiley   +1 more source

Detection Performance of Noncoherent Radar: MIMO Radar, Phased Array Radar, Directional MIMO Radar

open access: yesThe Journal of Korean Institute of Communications and Information Sciences, 2011
In a traditional phased array radar, closely spaced antenna elements transmit a scaled version of single waveform to maximize the signal energy. On the contrary, a multiple-input multiple-output (MIMO) radar consists of widely separated antennas and transmits an arbitrary waveform from each antenna element.
Chan-Ho An   +5 more
openaire   +2 more sources

Observation of edge solitons and transitions between them in a trimer circuit lattice

open access: yesCommunications Physics
In nonlinear topological systems, edge solitons either originate from linear topological edge modes or emerge as nonlinearity-induced localized states without topological protection.
Rujiang Li   +8 more
doaj   +1 more source

Diagnosis of array antennas based on near-field data using Faster R-CNN

open access: yesMaterials & Design
In this paper, a source reconstruction method for detecting failures in array antenna elements using near-field data based on Faster region-convolutional neural network (Faster R-CNN) is introduced.
Boguang Yang   +5 more
doaj   +1 more source

Radar and video as the perfect match : a cooperative method for sensor fusion [PDF]

open access: yes, 2019
Accurate detection and tracking of road users is essential for driverless cars and many other smart mobility applications. As no single sensor can provide the required accuracy and robustness, the output from several sensors needs to be combined ...
Allebosch, Gianni   +3 more
core  

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