Results 41 to 50 of about 3,021 (195)
Numerical simulation of Single-dish antenna radiation characteristics
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 The numerical simulation results of scattering characteristics of a single-dish antenna obtained by commercial Program FEKO and in the specialized program are given. The results are compared on different criteria.
M. M. Dghali
doaj
Poles Extraction of Radar Target Based on Narrowband Frequency Response Approximation
MATEC Web of Conferences, 2017 Pole is the most important feature of radar target in resonance region, and it is attitude insensitive. The poles extraction requires UWB (ultra-wideband) late-time response signal or frequency response data, which is difficult to achieve through general
Xing Xuran, Zhao Hongzhong, Jia Xin
doaj +1 more source
ДВУХЧАСТОТНАЯ МИКРОПОЛОСКОВАЯ АНТЕННА ДЛЯ СВЯЗИ С КОСМИЧЕСКИМ АППАРАТОМ [PDF]
, 2009 В работе представлено исследование двухчастотной микрополосковой антенны. Работа будет выполняться в несколько этапов. В ходе исследования будет рассмотрено 3 варианта микрополосковой антенны: полуволновый вибратор в свободном ...
Нусир, И.Н.
core +1 more source
Magnetic Resonance in Medicine, Volume 94, Issue 5, Page 2268-2285, November 2025.Abstract Purpose High‐resolution ex vivo diffusion‐weighted imaging (dMRI) with high b$$ b $$‐values presents significant challenges, including low signal‐to‐noise ratio (SNR), magnetic field perturbations, and temperature‐related measurement shifts.
Alina Müller +14 more
wiley +1 more source
Accurate Formulation of the Skin and Proximity Effects in High-Speed Cable System
IEEE Access, 2022 An efficient transmission line model of high-speed cables is established, to predict its response at a high-frequency region (up to 20 GHz). Especially, an appropriate conformal mapping technique is applied to formulate the per-unit-length parameters of ...
Oussama Gassab +10 more
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Antenna Gain and Link Budget for Waves Carrying Orbital Angular Momentum (OAM)
, 2015 This paper addresses the RF link budget of a communication system using unusual waves carrying an orbital angular momentum (OAM) in order to clearly analyse the fundamental changes for telecommunication applications.
Capet, Nicolas +5 more
core +3 more sources
A new hybrid method for the analysis of surrounded antennas mounted on large platforms [PDF]
, 2014 International audienceAn efficient technique to provide fast and accurate analysis of wide-band surrounded antennas mounted on electrically large platforms is presented and validated in this paper. The hybrid method combines Dual-Grid FDTD (DG-FDTD) with
Gillard, Raphaël +5 more
core +4 more sources
Electronics Letters, Volume 61, Issue 1, January/December 2025.Here, we proposed a target recognition method of natural resonant complex frequency under low Signal‐to‐Noise Ratio (SNR), mainly to solve the problem that natural resonant frequency is greatly affected by noise while the recognition accuracy is low.
Yonggang Li +4 more
wiley +1 more source
Toraldo’s Composed Pupil: A Theoretical Analysis of the Near Field
OpticsOver the years, there has been much speculation to understand whether (and how) it was possible to go below the diffraction limit. An advance in knowledge was achieved with the development of microwave techniques. In fact, more than fifty years after the
Daniela Mugnai +3 more
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A Study on the Performance Enhancement of Radar Target Classification Using the Two-Level Feature Vector Fusion Method [PDF]
Journal of the Korean Institute of Electromagnetic Engineering and Science, 2018 In this paper, we proposed a two-level feature vector fusion technique to improve the performance of target classification. The proposed method combines feature vectors of the early-time region and late-time region in the first-level fusion.
In-Ha Kim, In-Sik Choi, Dae-Young Chae
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