Results 51 to 60 of about 29,736 (309)
Effects of a reentry plasma sheath on the beam pointing properties of an array antenna
AIP Advances, 2018 The reduction in the gain of an on-board antenna caused by a reentry plasma sheath is an important effect that contributes to the reentry “blackout” problem.
Bowen Bai +3 more
doaj +1 more source
Research on Quantization Error Influence of Millimeter-Wave Phased Array Antenna
International Journal of Antennas and Propagation, 2021 The millimeter-wave phased array antenna is a higher integration system that is composed of different subarray modules, and in actual engineering, the existing amplitude, phase errors, and structural errors will change the performance of the array ...
Haigen Yang +10 more
doaj +1 more source
Spiral slotted phased antenna array [PDF]
, 1982 A flush mounting, cavity-backed, dual orthogonal slot antenna for aircraft and space vehicles is described. Improved radiation pattern characteristics are obtained by making the spiral slot pattern elliptical in the aperture plane. A cavity and a flanged
Ellis, H., Jr.
core +1 more source
Nanoindentation Criteria for Combinatorial Thin Film Libraries
Advanced Engineering Materials, EarlyView.Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley +1 more source
The Journal of Engineering, 2019 A large aperture membrane phased array antenna with an array antenna and transmit/receive (T/R) modules is presented for geosynchronous Earth orbit synthetic aperture radar applications.
Mingming Xu +5 more
doaj +1 more source
Sensors, 2021 This paper illustrates the application of CORPS (coherently radiating periodic structures) for feeding 2-D phased arrays with a reduced number of phase shifter (PS) devices. Three design configurations using CORPS are proposed for 2-D phased arrays.
Elizvan Juárez +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
SENSITIVITY OF ACTIVE PHASED ANTENNA ARRAY ELEMENT OF GURT RADIO TELESCOPE
Radio Physics and Radio Astronomy, 2016 Purpose: theoretical and experimental investigations of sensitivity by the signal-to-noise ratio criterion active antenna used as a phased array element of the GURT radio telescope of new generation.
P. L. Tokarsky +3 more
doaj +1 more source
International Journal of Antennas and Propagation, 2021 Electronically controlled antenna arrays, such as reconfigurable and phased antenna arrays, are essential elements of high-frequency 5G communication hardware.
Stanislav Ogurtsov +2 more
doaj +1 more source