Results 51 to 60 of about 19,271 (301)
Coupled Array of Diverse Elements for Wideband High Spherical Coverage
IEEE Open Journal of Antennas and Propagation, 2023 We propose a flexible cluster array concept utilizing diverse antenna elements and the mutual coupling among them to improve the spherical coverage. This innovative approach can not only enhance the impedance matching but also improve the beamforming ...
Quangang Chen +4 more
doaj +1 more source
Evaluation and compensation of mutual coupling and other non-idealities in small antenna arrays [PDF]
, 2006 Smart antenna technology is a challenging area in the development of wireless communications. Using smart antennas the quality of a radio link can be improved by many ways. Smart antennas are active antenna arrays or groups with changeable complex-valued
Salonen, Ilkka
core
Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing
Advanced Functional Materials, EarlyView.Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu +6 more
wiley +1 more source
On-body antenna wit parasitic elements [PDF]
, 2008 An antenna with multi-elements that act together to form an array is required to increase the gain. One example is the well-known Yagi-Uda antenna.
Hall, Peter S. +1 more
core
2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics
Advanced Functional Materials, EarlyView.2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit +5 more
wiley +1 more source
On the Impact of Hardware Impairments on Massive MIMO [PDF]
, 2014 Massive multi-user (MU) multiple-input multiple-output (MIMO) systems are one possible key technology for next generation wireless communication systems. Claims have been made that massive MU-MIMO will increase both the radiated energy efficiency as well
Athley, Fredrik +8 more
core +2 more sources
Advanced Functional Materials, EarlyView.Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley +1 more source
Directive and Steerable Radiation Pattern using SASPA Array
Journal of Engineering, 2023 This work examines the ability of a special type of smart antenna array known as Switched Active Switched Parasitic Antenna (SASPA) to produce a directive and electronically steerable radiation pattern.
Rabah Abduljabbar Jasem
doaj +1 more source
Phased Array Feed Calibration, Beamforming and Imaging [PDF]
, 2009 Phased array feeds (PAFs) for reflector antennas offer the potential for increased reflector field of view and faster survey speeds. To address some of the development challenges that remain for scientifically useful PAFs, including calibration and ...
Alan Stemmons +42 more
core +1 more source
UTHM water quality classification based on sub index [PDF]
, 2020 River or stream at their source is unpolluted, but as water flow downstream, the river or lake is receiving point and non-point pollutant source. Ammoniacal nitrogen (NH3- N) and suspended solids (SS) strongly influences the dynamics of the dissolved ...
Johari, A. H. +2 more
core +1 more source