Results 51 to 60 of about 2,076,516 (339)
Characterization of dual‐polarized monostatic patch antennas for full‐duplex applications
Engineering Reports, 2020 This paper presents the characterization of two different dual‐polarized monostatic (shared radiator) antennas. As an example, the design and implementation of two dual‐polarized 2.4 GHz patch antennas are presented in this paper for in‐band full‐duplex (
Haq Nawaz, Ahmad U. Niazi
doaj +1 more source
IEEE Access, 2020 In this paper, an 8 × 2-element 60-GHz band circularly polarized post-wall waveguide slot array antenna loaded with dipoles is proposed. The antenna is composed of a feeding circuit, radiating slots on radiating waveguides, and dipoles for ...
Takashi Tomura +2 more
doaj +1 more source
Dual-Band Circularly Polarized Transmitarray Antenna for Satellite Communications at (20, 30) GHz
IEEE Transactions on Antennas and Propagation, 2019 A novel dual-band polarization-independent transmitarray is introduced in this paper for communication systems in Ka-band. Thanks to its unit-cell topology, the transmitarray antenna demonstrates almost complete independent performance at two design ...
H. Hasani +4 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar +7 more
wiley +1 more source
Millimeter‐wave end‐fire dual‐polarized frequency scanning antenna using LTCC technology
Electronics LettersThis letter proposes a millimeter‐wave dual‐polarized (DP) end‐fire frequency scanning antenna utilizing low temperature co‐fired ceramic (LTCC) technology.
Pengfei Yu +5 more
doaj +1 more source
Nondestructive Testing of Welded Composite Metal Foams
Advanced Engineering Materials, EarlyView.X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
Broadband Slot Feed for Integrated Lens Antennas [PDF]
IEEE Antennas and Wireless Propagation Letters, 2007 This letter presents a new broadband printed antenna based on crossed exponential slot configuration, which presents very good linear polarization. It is compact and especially adequate for integrated lens antenna feeding at millimeter waves and submillimeter waves. The concept is validated with experimental results.
Costa, Jorge R., Fernandes, Carlos A.
openaire +2 more sources
Algoritmos genéticos aplicados na otimização de antenas refletoras [PDF]
, 2002 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Muito se tem estudado sobre Otimização Estocástica com Algoritmos Genéticos. Sua aplicação em problemas eletromagnéticos
Ávila, Sérgio Luciano
core
The Analysis of Stub on Coplanar-Fed of Single and Array Microstrip Antenna for Mobile Satellite Communication [PDF]
, 2017 The microstrip antenna has small, lightweight shape characteristics, and limit performances. It is necessary to increase the performances, especially the axial ratio (Ar) of the previous antenna configured in two layers accompanying the capacitive ...
Rahmadwati, Rahmadwati; Brawijaya University +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver +9 more
wiley +1 more source