Results 21 to 30 of about 7,102,543 (272)
Robust Design by Antioptimization for Parameter Tolerant GaAs/AlOx High Contrast Grating Mirror for VCSEL Application [PDF]
, 2013 A GaAs/AlOx high contrast grating structure design which exhibits a 99.5% high reflectivity for a 425nm large bandwidth is reported. The high contrast grating (HCG) structure has been designed in order to enhance the properties of mid-infrared VCSEL ...
Chevallier, Christyves +3 more
core +3 more sources
Miniaturized Wideband CP Antenna Using Hybrid Embedded Metasurface Structure
IEEE Access, 2022 In this study, a hybrid embedded metasurface (MTS) structure is proposed and applied to realize a miniaturized MTS antenna. In contrast to the conventional periodic rectangular MTS, the proposed MTS structure is formed by hybrid embedded patches composed
Bin Zheng +4 more
doaj +1 more source
International Journal of Antennas and Propagation, 2015 Composite material is widely used in the conformal load-bearing antenna structure (CLAS), and the manufacturing flaws in the packaging process of the CLAS will lead to the degradation of its wave-transparent property.
P. Li, W. Y. Xu, L. W. Song, Y. Y. Qiu
doaj +1 more source
Sensors, 2023 The inverse finite element method (iFEM) is a novel method for reconstructing the full-field displacement of structures by discrete measurement strain. In practical engineering applications, the accuracy of iFEM is reduced due to the positional offset of
Jiewei Lu +3 more
doaj +1 more source
The vertical structure and kinematics of grand design spirals [PDF]
, 2014 We use an N-body simulation to study the 3D density distribution of spirals and the resulting stellar vertical velocities. Relative to the disc's rotation, the phase of the spiral's peak density away from the mid-plane trails that at the mid-plane.
Bochanski +30 more
core +2 more sources
Scientific Reports, 2017 An efficient and environmentally friendly method was designed for the oxidation of sulfides to sulfoxides with a recyclable, carbon-skeleton-based heterogeneous catalyst developed by titanium sulfate [Ti(SO4)2] mineralization on the surface of graphene ...
Qinghe Wang +9 more
doaj +1 more source
Effect of Ground Plane Deformation on Electrical Performance of Air Microstrip Antennas
International Journal of Antennas and Propagation, 2020 This paper covers the variation of electrical performance of air microstrip antennas due to its ground plane deformation. A typical sinusoidal function is utilized to characterize the shape of deformation, based on which different shapes of ground plane ...
Wei Wang +4 more
doaj +1 more source
Micromachines, 2022 The recognition of defects in the solder paste printing process significantly influences the surface-mounted technology (SMT) production quality. However, defect recognition via inspection by a machine has poor accuracy, resulting in a need for the ...
Jiantao Chang +4 more
doaj +1 more source
Control of sideslip and yaw rate in 4-wheel steering car using partial decoupling and individual channel design [PDF]
, 2003 This paper presents a new steering control structure for cars equipped with 4-wheel steering. This control structure is based on a simplified linear model of the lateral dynamics of such cars and aims to decouple the control of sideslip from the control ...
Leith, D.J. +2 more
core +1 more source
IEEE Access, 2022 A high-temperature and frequency-reconfigurable multilayer frequency selective surface (FSS) based on liquid metal is proposed in this work. After construction of a multilayer dielectric cavity with specific dielectric-shaped pillars and the injection of
Peng Li +4 more
doaj +1 more source