Results 61 to 70 of about 68,631 (303)

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  

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

Opportunistic Spectrum Sharing using Dumb Basis Patterns: The Line-of-Sight Interference Scenario

, 2014
We investigate a spectrum-sharing system with non-severely faded mutual interference links, where both the secondary-to-primary and primary-to-secondary channels have a Line-of-Sight (LoS) component. Based on a Rician model for the LoS channels, we show,
Alaa, Ahmed M., Ismail, Mahmoud H., Tawfik, Hazim   +2 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Wideband Sierpinski carpet monopole antenna [PDF]

, 2005
This paper described the design and fabrication of the fractal Sierpenksi carpet monopole antenna. The properties of antennas such as bandwidth and radiation pattern have been investigated.
A. Rahim, Mohamad Kamal, Abd. Aziz, Mohamad Zoinol Abidin, Abdullah, Noorsaliza   +2 more
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 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

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Design of Wideband and High-Gain Slotline Antenna Using Multi-Mode Radiator

IEEE Access, 2019
In this paper, a novel wideband slotline antenna with high gain characteristic is presented by using a multi-mode radiator under the circumstance of the optimized ground plane.
Xiaokun Bi, Guan-Long Huang, Xiao Zhang, Tao Yuan   +3 more
doaj   +1 more source

SiGe process integrated on-chip dipole antenna on finite size ground plane [PDF]

, 2013
This letter investigates the effect of a finite-size ground plane on the radiation pattern and reflection coefficient of a SiGe process integrated on-chip antenna.
Goettel, Benjamin, Kaynak, Mehmet, Seyyedesfahlan, Mirmehdi, Tekin, İbrahim   +3 more
core   +1 more source