Results 121 to 130 of about 544,807 (305)

Performance Analysis of X Band Horn Antennas using Additive Manufacturing Method Coated with Different Techniques

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this study are analyzed horn antennas to operating at X band (8 – 12 GHz) and manufactured by additive manufacturing method (AM). To construct the antennas using AM method was necessary made the structure with acrylonitrile butadiene styrene (ABS ...
Euclides L. Chuma, Yuzo Iano, Leonardo L. Bravo Roger, Mathias Scroccaro, Felipe Frazatto, Leandro Tiago Manera   +5 more
doaj   +1 more source

Developing a Suitable Anion Exchange Layer Structure for Pure–Water Fed Bipolar Membrane CO2 Electrolysis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A porous anion exchange layer (AEL) is implemented in a forward‐biased bipolar membrane CO2 electrolyzer to suppress carbonate crossover, support CO2 regeneration and maintain cathode alkalinity. Two fabrication strategies are compared—deposition on a silver gas diffusion electrode (GDE) or on the CEM—showing that a porous AEL‐coated GDE provides the ...
Henning Lorenz, Nico Roubicek, Simon Thiele, Chuyen van Pham   +3 more
wiley   +1 more source

A Low Distortion Radiation Pattern Ultra-Wideband TEM Horn Antenna

IEEE Open Journal of Antennas and Propagation
This paper introduces a low distortion radiation pattern ultra-wideband (UWB) transverse electromagnetic (TEM) horn antenna designed to operate in the 2 to 18 GHz frequency range.
Mahdi Zoghi, Farrokh Hodjatkashani, Mir Emad Lajevardi   +2 more
doaj   +1 more source

Next‐Generation Carbon‐Based Anodes for Alkali Metal‐Ion Batteries: Recent Progress on Biphenylene and Emerging Materials

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Recent advances in carbon‐based anodes for alkali metal‐ion batteries are critically reviewed, with emphasis on biphenylene and other emerging carbon allotropes. Biphenylene exhibits exceptional theoretical electrochemical properties beyond conventional graphite, highlighting its strong potential as a next‐generation anode material once scalable ...
Adewale Hammed Pasanaje, Nirpendra Singh
wiley   +1 more source

Revealing Structure–Performance Relations in Core‐Shell Catalyst‐Based PEM Water Electrolyzer Anodes with Low Iridium Loading

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Table of Contents The TiO2@IrO2 core–shell architecture ensures high electronic conductivity even at a low iridium content of 10 wt%. The resulting catalyst layer shows significantly higher iridium utilization than a commercial reference, leading to improved PEMWE single‐cell performance at low iridium loading.
Selina Finger, Darius Hoffmeister, Tien‐Ching Ma, Lena Fiedler, A. Lucía Morales, Andreas Körner, Nico Roubicek, Leopold Lahn, Johannes Böhmer, Thomas Przybilla, Erdmann Spiecker, Olga Kasian, Anna T. S. Freiberg, Karl J. J. Mayrhofer, Simon Thiele, Chuyen van Pham, Andreas Hutzler   +16 more
wiley   +1 more source

A Body‐Coupled Electronic Skin With Branch‐Enhanced Grid Architecture for Fine Tactile Sensing

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Ambient power‐frequency electric fields, commonly regarded as harmful environmental exposure, are converted into a usable energy source for self‐powered tactile sensing. A branch‐enhanced grid electronic skin based on body‐coupled electric‐field sensing is developed, where branched conductive networks enlarge the effective sensing area and enable ...
Guoliang Ma, Kun Ma, Congtian Gu, Haoyu Tian, Tianshuo Zhang, Xueqing Jiang, Mengze Zhang, Jianhao Li, Kaixian Ba, Bin Yu   +9 more
wiley   +1 more source

A 60GHz Self-Shielded Yagi Antenna with Pyramidal Horn

, 2016
The paper presents a 60GHz self-shielded Yagi antenna with pyramidal horn for compact integration to mobile device. The proposed antenna can provide a peak gain of 13.37dBi with 19GHz 3-dB bandwidth and 16GHz of impedance bandwidth.
Kim, Hong Yi, Park, Chul Soon, Jang, Tae Hwan   +2 more
core   +1 more source

Investigation of a Multi-Waveguide Fed Horn Antenna [PDF]

, 2012
A horn antenna fed by a linear array of 4 H-plane coupled rectangular waveguides is presented. The antenna was simulated, constructed and measured. The gain of this horn is higher by more than 3 dB than the gain of conventional horn with the same height.
E Levine, R Marino, R Mashiah, H Matzner
core  

Kaleidoscopic Electromagnetic Wave Manipulation via a Universal Reconfigurable Metasurface Platform

Electron, EarlyView.
A multidimensional reconfigurable metasurface enables independent control of the amplitude, phase, polarization, and spectral responses of reflected electromagnetic (EM) waves. Integrating spatial, polarization, and spectral manipulation within a single platform, it provides a versatile solution for intelligent EM systems, next‐generation wireless ...
Wanting Tong, Yi Wu, Ye Deng, Cheng Zhang, Chaoyun Song, Yizhou Shen, Junming Zhao, Tian Jiang, Ke Chen, Yijun Feng   +9 more
wiley   +1 more source

Planar Pyramidal Horn Antenna Without Any E-Plane Flaring for 5G Applications

IEEE Access
This paper presents, for the first time, a planar implementation of a pyramidal horn antenna for 5G millimeter-wave (mmWave) applications. A substrate integrated waveguide (SIW) based planar H-plane horn antenna is designed and judiciously modified to ...
Nilanjan Dutta, Shrabani Mukherjee, Suramate Chalermwisutkul, Prayoot Akkaraekthalin, Kaushik Mandal   +4 more
doaj   +1 more source