Results 21 to 30 of about 360,981 (266)
Физика волновых процессов и радиотехнические системы, 2021 Exact mathematic models were developed for traveling wave antennas with a constant slot width based on the dyadic Green function, taking into account both the main and cross-polarization components of the field in the far radiation zone.
Eugeniy I. Nefyodov +3 more
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Optimization of superconducting antenna arrays using RBF neural network [PDF]
International Journal for Simulation and Multidisciplinary Design Optimization, 2010 In this work, RBF neural network is used to optimize the radiation pattern of non-uniform linear arrays of High superconducting rectangular microstrip antennas, on uniaxial anisotropic substrate.
Barkat O., Benghalia A.
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Multiband Reconfigurable Antennas for 5G Wireless and CubeSat Applications: A Review
IEEE Access, 2022 The rapid development of wireless technology has sparked interest in multi-band reconfigurable antennas as devices and satellites are innovating toward miniaturization.
Kebonyethebe Ramahatla +3 more
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Characterization of Acoustic Sources by Optical Feedback Interferometry
Proceedings, 2017 Sound can be described as the propagation of pressure variations in compressible media that involves compression and expansion and induces a change in the density of the medium.
Fernando Urgiles +2 more
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A Compact Wideband Active Two-Dipole HF Phased Array
Applied Sciences, 2021 The design and construction of an upgraded HF quarter-wavelength two-dipole active array with 90° difference feed was implemented in the course of a research project to perform a directional (azimuthal) investigation of interference at HF.
Antonios Constantinides +1 more
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Journal of ICT Research and Applications, 2023 Window methods that are frequently used in the design of finite impulse response filters are also applicable to antenna array designs. This paper explores the application of a Kaiser function in a power-weighted antenna array design, focusing on the ...
Hartuti Mistialustina +2 more
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Scattering of Elastic Waves by an Inhomogeneous Boundary in the Acoustic Testing of Permanent Joints
Приборы и методы измерений, 2019 Improving the reliability and testing performance of permanent joints оf different materials made by welding, spraying, gluing, soldering and other methods is an important production task, for which the ultrasonic method is the simplest and most ...
A. R. Baev +3 more
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Modeling the radiation pattern of LEDs
Optics Express, 2008 Light-emitting diodes (LEDs) come in many varieties and with a wide range of radiation patterns. We propose a general, simple but accurate analytic representation for the radiation pattern of the light emitted from an LED. To accurately render both the angular intensity distribution and the irradiance spatial pattern, a simple phenomenological model ...
Ivan, Moreno, Ching-Cherng, Sun
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FORMATION OF THE DIRECTION DIAGRAM IN PHASED ANTENNA ARRAY
Российский технологический журнал, 2019 The article presents the results of the study of phase and temporal methods in the formation of the direction diagram of phased antenna array, and carries out a comparative analysis using an eight-element equidistant antenna array based on Vivaldi ...
N. M. Legkiy, I. V. Unchenko
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Adjusting Radiation Pattern of Small Antennas [PDF]
2020 International Workshop on Antenna Technology (iWAT), 2020 The antenna clusters have been used to control the impedance properties of the antenna, but they have potential also in radiation pattern reconfigurability. We demonstrate the benefits of multi-feed antennas using a mobile antenna as an example.
Luomaniemi, Rasmus +3 more
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