Results 41 to 50 of about 836 (216)
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Review of Low Profile Substrate Integrated Waveguide Cavity Backed Antennas
International Journal of Antennas and Propagation, 2013 Low profile cavity backed antennas (CBA) based on substrate integrated waveguide (SIW) technology presented in published papers have been reviewed in this paper.
Guo Qing Luo +2 more
doaj +1 more source
Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
wiley +1 more source
Wideband patch antenna through introducing co‐plane terminal
IET Microwaves, Antennas & PropagationWideband operation is a crucial topic in patch structure research. Various wideband methods have been developed for patch antennas. However, some of the key benefits of patch antennas, such as semi‐space radiation and easy fabrication, are degraded.
Boyu Sima +7 more
doaj +1 more source
Experimental study of spiral antennas with various additional deceleration options
Физика волновых процессов и радиотехнические системыBackground. The work is aimed at the development and research of flat spiral antennas with additional slowdown. The use of slowdown structures allows to change the operating frequency range of antennas and the electrodynamic characteristics of antennas ...
Dmitrij P. Tabakov, Mikhail A. Malakhov
doaj +1 more source
Antenna design for a massive multiple input environmental sensor network
Digital Communications and Networks, 2016 This article describes the design and simulation of a pair of antennas on a small PCB with minimal coupling for a massive multiple input sensor network. The two antennas are planar inverted-F antennas (PIFA) that are fed with microstrip feed lines.
J. Craig Prather +4 more
doaj +1 more source
Fabry-Perot Cavity Leaky Wave Antennas with Tunable Features for Terahertz Applications
Condensed Matter, 2020 Terahertz (THz) radiation is a very appealing band of the electromagnetic spectrum due to its practical applications. In this context, the THz generation and manipulation is an essential part of the technological development.
Silvia Tofani, Walter Fuscaldo
doaj +1 more source
Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals
Advanced Engineering Materials, EarlyView.This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao +2 more
wiley +1 more source
Characteristic-Mode-Based Design of Planar In-Band Full-Duplex Antennas
IEEE Open Journal of Antennas and Propagation, 2020 In-band full-duplex radios demand simultaneous transmit and receive (STAR) antennas with high isolation, compact and ultra-low profiles, and simple feed networks. Current state-of-the-art designs rarely meet all of these requirements at the same time. In
Qianyi Li, Ting-Yen Shih
doaj +1 more source