Results 41 to 50 of about 8,876 (268)

A Wideband Slot Antenna with Folded Parasitic Line for Multiple Band Operation [PDF]

Radioengineering, 2016
The rectangular slot antenna with rectangular stub for a wide impedance bandwidth is proposed. In addition, the interference frequency band has been rejected by placing the folded parasitic line surrounding the rectangular stub of the presented antenna ...
C. Mahatthanajatuphat, N. Srisoontorn, T. Suangun, P. Akkaraekthalin   +3 more
doaj  

Design of pattern-reconfigurable circularly polarized unidirectional antenna based on quasi-radiator for ISM applications

Heliyon, 2022
A pattern-reconfigurable circularly polarized antenna for 2.45 GHz industrial, scientific, and medical (ISM) band applications is designed in this work.
Philip Arthur, Mubarak Sani Ellis, Abdul-Rahman Ahmed, Jerry John Kponyo   +3 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Design Investigation of a Modified HMSIW Leaky Wave Antenna

International Journal of Information and Communication Technology Research, 2014
In this paper, a new leaky wave antenna (LWA) is introduced. The proposed antenna radiates through a dielectric aperture created by half mode substrate integrated waveguide (HMSIW) technique.
Seyed Ali Razavi, Mohammad H. Neshati
doaj  

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Far field reconstruction of antennas via single‐surface phaseless spherical near‐field scans: A novel approach based on dipole equivalence

Electronics Letters
A novel approach is proposed in this paper to reconstruct the far‐field radiation pattern from the phaseless electric field of an antenna scanned on a single near‐field sphere.
Junzhe Tan, Lingnan Song, Zhiqiang Xiang
doaj   +1 more source

A compact frequency reconfigurable beam switching antenna based on a single‐layer FSS

IET Circuits, Devices and Systems, 2023
A compact frequency reconfigurable beam switching antenna based on a single‐layer frequency selective face (FSS) is proposed in this paper. The proposed antenna consists of a dual‐band dipole antenna and a single‐layer FSS with hexagonally arrangement ...
Guang Li, Yangyang Ye, Fushun Zhang
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Self‐Cleaning Sensor Surfaces for Long‐Term Environmental Monitoring

Advanced Engineering Materials, EarlyView.
Long‐term use of unattended outdoor sensors without soiling or biofouling is achieved through generation of a micro‐ and nanorough cuvette surface by combing hydrophobic nanoparticles with fluorinated polymers, crosslinked and surface‐attached through CHic chemistry. The coating demonstrates self‐cleaning behavior and prolonged outdoor stability, which
Sanam Kumari Rajak, Yasmina Frey, Ulrike Wallrabe, Oswald Prucker, Jürgen Rühe   +4 more
wiley   +1 more source

Characterization of the radiation pattern of antennas using time-domain spherical-multipole and moment expansion

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper presents results of a time-domain spherical-multipole near-to-far-field transformation together with a moment expansion applied to antenna radiation patterns.
Glaucio L. Ramos, Cássio G. Rego, Alexandre R. Fonseca   +2 more
doaj   +1 more source