Results 111 to 120 of about 464,477 (298)

Design of a broadband horn antenna

, 2022
Horn antenna is one typical kind of antenna that has a wide use nowadays. Due to its unique structure and characteristic, it is usually designed to have a broad band and applied to a lot of applications.
Ding, Andi
core  

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

Filtering Horn Antenna Using Planar Quasi-Elliptical Frequency Selective Surface

IEEE Access
Fabrication and characterization of a planar frequency selective surface (FSS) integrated filtering horn antenna is presented in this paper. The proposed FSS with shorting-pins is systematically designed to achieve an elliptical transmission response ...
Chithra Margabandhu, D. Kannadassan
doaj   +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 Simple Approach to Select the Optimum Design Frequency for Pyramidal Horn Antenna Design

The Journal of Engineering
In this paper, a simple procedure is proposed to select the optimum design frequency for the horn antenna design by combining theory and simulation. The gain of horn antennas often increases and the aperture efficiency decreases while the frequency of ...
Abolfazl Azari, Hadi Aliakbarian
doaj   +1 more source

Pneumocoele sinus: Computed tomographic findings and surgical approach in a 2‐year‐old Cob filly

Equine Veterinary Journal, EarlyView.
Abstract Background Pneumosinus dilatans and pneumocoele sinus describe abnormal hyperpneumatisation of paranasal sinuses, with the latter being accompanied by thinning of bony walls. Although recognised in human and equine medicine, to the authors' knowledge, this condition's computed tomography (CT) findings and successful surgical approach in horses
Sarah L. Thompson, Manon W. J. Peeters, Gabriel Manso‐Díaz, Andrew R. Fiske‐Jackson   +3 more
wiley   +1 more source

Gain improvement of a conventional conical using the perforated circular aluminum structure with a mounting PCB barrier for radar system

Results in Engineering
This research presents a technique to enhance the gain of a conical horn antenna by introducing a squared mounting barrier made of a printed circuit board combined with a perforated aluminum dielectric, placed between the conical horn antenna and the PCB.
Supawat Lawanwisut, Maitree Thamma, Witchupong Wiboonjaroen, Thanat Sooknuan, Sanchai Ramphueiphad, Apidach Boonjue, Saran Kampeephat   +6 more
doaj   +1 more source

Rethinking a positive‐sum game: US FDI location decisions in the presence of Chinese FDI

Global Strategy Journal, EarlyView.
Abstract Research Summary This study examines how rising Chinese outbound foreign direct investment (OFDI) in third‐country markets shapes US MNEs' foreign direct investment location decisions amid escalating US–China geopolitical rivalry. US firms initially benefit from complementary co‐location dynamics, as Chinese OFDI—particularly in infrastructure—
Injae Jeon, Jon Jungbien Moon
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

Exploring vaginal microbiota–tissue resident stem cell crosstalk: VCAM1/Akt signaling ‐mediated enhancement of regenerative capacity

Interdisciplinary Medicine, EarlyView.
Vaginal microbiota‐derived secretory factors enhance the regenerative capacity of human endometrial stem cells by upregulating VCAM1 and activating PI3K/Akt signaling. This microbiota–stem cell crosstalk promotes self‐renewal, migration, multilineage differentiation, and metabolic reprogramming in vitro and in vivo, establishing a novel microbiota ...
Soo‐Rim Kim, Eun‐Kyung Min, Choon‐Mi Lee, Kun‐Hee Na, Chan Hum Park, YunJae Jung, Hwa‐Yong Lee   +6 more
wiley   +1 more source