Results 41 to 50 of about 25,376 (311)
Advanced Engineering Materials, EarlyView.A novel, temperature‐controlled post‐consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber‐reinforced filaments for additive manufacturing of high‐performance thermoplastics.
Daniel Beermann +2 more
wiley +1 more source
A telemetry antenna system for unmanned air vehicles [PDF]
, 2010 This paper presents a low VSWR high gain telemetry antenna system manufactured for UAVs that provides 360± coverage in the roll plane of the UAV. Proposed telemetry antenna system includes four telemetry antennas, one power divider that has one input and
Dogan, Mustafa +3 more
core
Electronics LettersThis letter presents a Ku‐band horizontally polarized (HP) omnidirectional antenna based on single‐ridge trapezoidal waveguide (STW). Four groups of longitudinal slots are etched on a pair of back‐to‐back arranged STWs to achieve the HP omnidirectional ...
Kai Ye +4 more
doaj +1 more source
Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6
Advanced Engineering Materials, EarlyView.The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter +4 more
wiley +1 more source
Antenna simulator permits preinstallation system checkout [PDF]
, 1966 Antenna simulator provides for evaluation checkout of corporate feeds, monopulse sum-and-difference networks, etc., in a shielded environment prior to system checkout on an antenna pattern range.
Elia, A. D., Schmidt, R. F.
core +1 more source
Beam squint and Stokes V with off-axis feeds
, 2008 Radio telescopes with off-axis feeds, such as the (E)VLA, suffer from "beam squint" in which the two orthogonal circular polarizations sampled have different pointing centers on the sky.
Cotton, W. D., Uson, Juan M.
core +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
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
Advanced Engineering Materials, EarlyView.High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé +5 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