Results 51 to 60 of about 57,490 (299)
Dense transmit and receive antenna arrays [PDF]
2010 IEEE Antennas and Propagation Society International Symposium, 2010 Recent progress in millimeter-wave and microwave integrated circuit (IC) manufacturing technology has created new opportunities for the development of novel, low-cost antenna array architectures. In such systems, the associated specifications on RF components such as phase-shifters, oscillators, and amplifiers, can be challenging to meet in a cost ...
Wornell, Gregory W. +3 more
openaire +1 more source
One-Bit Precoding and Constellation Range Design for Massive MIMO with QAM Signaling
, 2018 The use of low-resolution digital-to-analog converters (DACs) for transmit precoding provides crucial energy efficiency advantage for massive multiple-input multiple-output (MIMO) implementation.
Liu, Ya-Feng, Sohrabi, Foad, Yu, Wei
core +1 more source
Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability
Advanced Engineering Materials, EarlyView.This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner +3 more
wiley +1 more source
Measurement-Based Spatial Correlation and Capacity of Indoor Distributed MIMO System
International Journal of Antennas and Propagation, 2013 Distributed MIMO (D-MIMO) system is one of the candidates for future wireless access networks. In this study, the spatial correlation and capacity in indoor D-MIMO system are presented.
Yan Zhang +3 more
doaj +1 more source
Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials
Advanced Engineering Materials, EarlyView.Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai +2 more
wiley +1 more source
Integrated active antenna with simultaneous transmit-receiveoperation
Electronics Letters, 1996 The authors present results for a novel two element active transmit-receive array using dual linear polarisation and sequential rotation. Each element includes an integrated oscillator and amplifier mounted on orthogonal edges of a square patch, such that transmit and receive paths are isolated and polarisation duplexed. The array gives in excess of 55
M. J. Cryan +3 more
openaire +4 more sources
Open-Loop Spatial Multiplexing and Diversity Communications in Ad Hoc Networks
, 2010 This paper investigates the performance of open-loop multi-antenna point-to-point links in ad hoc networks with slotted ALOHA medium access control (MAC).
Collings, Iain B. +2 more
core +2 more sources
Parallel preconditioners for high order discretizations arising from full system modeling for brain microwave imaging [PDF]
, 2016 This paper combines the use of high order finite element methods with parallel preconditioners of domain decomposition type for solving electromagnetic problems arising from brain microwave imaging.
Bonazzoli +10 more
core +5 more sources
Advanced Engineering Materials, EarlyView.This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo +3 more
wiley +1 more source
The Circular Polarization Diversity Antennas Achieved by a Fractal Defected Ground Structure
IEEE Access, 2019 This paper proposes the circularly polarized (CP) antennas with a restored radiation pattern for the polarization diversity applications. The proposed CP antennas have dual polarizations, the left-handed circularly polarized (LHCP) antenna is designed ...
Kun Wei, Bocheng Zhu, Mingliang Tao
doaj +1 more source