Results 71 to 80 of about 156,809 (211)
Conformal phased array with beam forming for airborne satellite communication [PDF]
, 2008 For enhanced communication on board of aircraft novel antenna systems with broadband satellite-based capabilities are required. The installation of such systems on board of aircraft requires the development of a very low-profile aircraft antenna, which ...
Heideman, R.G. +8 more
core +2 more sources
A Novel Design of Slotted Waveguide Phased Array Antenna
Advanced Electromagnetics, 2019 A novel design of phased array antenna based on a Slotted Waveguide Antenna Array (SWAA) is introduced in this paper. The CST Microwave Studio simulation results show that the S‒parameters, the gain, the axial ratio, and the beamwidth of the proposed ...
M. Elhefnawy, A. A. Al-Hadi
doaj +1 more source
A High-Gain Sparse Phased Array With Wide-Angle Scanning Performance and Low Sidelobe Levels
IEEE Access, 2019 This paper introduces the concept of the sparse array into the design of a wide-angle scanning phased array to obtain the low sidelobe level (SLL). The adopted array element is a half-mode substrate integrated waveguide slot array, which can radiate a ...
You-Feng Cheng +3 more
doaj +1 more source
Integrated Phase-locked Laser Diodes at 1.55μm [PDF]
, 2017 Two types of integrated phased locked laser diodes operating at 1.55 μm were demonstrated, using either a distributed feedback laser seeding source or a self-locking multi-mode interference array.
Hou, Lianping +2 more
core +1 more source
Study on Denoising Method of Weld Defect Signal Based on SSA-VMD-WPD
Applied SciencesDefects in welds can affect the structural safety and reliability of workpieces. Currently, the method of using phased array ultrasonic inspection technology for non-destructive testing of weld structures with high detection efficiency, good sensitivity,
Xiangqing Chen +4 more
doaj +1 more source
Networked Array Recorder (NeAR) Microphones for Field-Deployed Phased Arrays [PDF]
An innovative edge-computing concept known as NeAR (Networked Array Recorder) has been developed to provide enhancements to existing field-deployable microphone phased arrays utilized for aeroacoustic flyover measurements of airframe and propulsive noise
Cull.iton, William G. +1 more
core +1 more source
Optical control of an 8-element Ka-band phased array using a high-speed optoelectronic interconnect [PDF]
Optical distribution of control signals in electronically steered phased array antennas is being considered. A demonstration experiment is described in which a high speed hybrid GaAs optoelectronic integrated circuit (OEIC) was used to control an eight ...
Bendett, M. +3 more
core +1 more source
S-band antenna phased array communications system [PDF]
The development of an S-band antenna phased array for spacecraft to spacecraft communication is discussed. The system requirements, antenna array subsystem design, and hardware implementation are examined.
Chapman, J. E. +2 more
core +1 more source
Optical Physics of Imaging and Interferometric Phased Arrays
, 2006 Microwave, submillimetre-wave, and far-infrared phased arrays are of considerable importance for astronomy. We consider the behaviour imaging phased arrays and interferometric phased arrays from a functional perspective.
Hobson, Michael P. +2 more
core +2 more sources
New Journal of Physics, 2010 For a long time phase arrays have been used in a variety of wave transmission applications because of their simplicity and versatility. Conventionally there is a trade-off between the compactness of a phase array and its directivity. In this paper we demonstrate how by embedding a normal phase array within a superlens (made of negative refractive index
W H Wee, J B Pendry
openaire +1 more source