Results 21 to 30 of about 3,328,221 (312)
Remote Sensing, 2023 This article discusses the methods and results of assessing the angular resolution and sounding depth of enhanced-power ground penetration radars obtained during archaeological and geographical expeditionary works in various natural areas.
Pavel Morozov +4 more
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Integrating Radiation Oncology Into Undergraduate Medical Education [PDF]
, 2021 Cancer is one of the most important public health problems. However, medical education has not advanced at the same rate when it comes to cancer education.
Holmes, Jordan A. +7 more
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Brain and SpineIntroduction: Cervical central spinal stenosis (CCSS) is a leading cause of adult spinal cord dysfunction. Magnetic resonance imaging (MRI) is the reference standard, but reporting is time-consuming and subject to inter-observer variability.
Vasileios Mougios +8 more
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Вестник Дагестанского государственного технического университета: Технические науки, 2022 Objective. The aim of the study is to build and optimize a computer model of the antenna using software packages for electrodynamic modeling.Method. The study is based on dynamic modeling methods.Result. In this paper, the dependences of the width of the
S. A. Ibragimov
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Calculation of radiation patterns
Electronics Letters, 1969 The letter proves that two distinct methods of calculating the radiation pattern of a spherical-aperture distribution are mathematically equivalent, i.e. by a spherical-harmonic expansion or by Silver's far-field formula. The merits of each method and their extension to arbitrary-shaped apertures are briefly discussed.
J.R. James, L.W. Longdon
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Comprehensive Analysis of Xiaomi Mi 8 GNSS Antenna Performance
SensorsThe interest in precise point positioning techniques using smartphones increased with the launch of the world’s first dual-frequency L1/L5 GNSS smartphone, Xiaomi Mi 8.
Mónica Zabala Haro +3 more
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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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Antenna Radiation Pattern Influence on the Localization Accuracy in Wireless Sensor Networks
Advances in Electrical and Computer Engineering, 2013 Localization or position determination is one of the most common applications for the wireless sensor networks. Many investigations have been made during the last decade, most of the effort being concentrated in the direction of improving the accuracy ...
COCA, E., POPA, V.
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Analyze UCA Based OAM Communication From Spatial Correlation
IEEE Access, 2020 Orbital Angular Momentum(OAM) of Electromagnetic(EM) wave can be seen as a new degree of freedom(DoF) for wireless communication besides time and frequency. Uniform Circular Antenna Array(UCA) fed with signal of equal amplitude and equal phase difference
Wei Yu +3 more
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Embedding Information in Radiation Pattern Fluctuations [PDF]
2020 IEEE International Symposium on Information Theory (ISIT), 2020 The radiation pattern of transmit antennas varies and fluctuates as receivers change their location, other objects move around, and due to the antenna design itself. In this paper, we demonstrate how this observation can be exploited to align most of the interference signal power and significantly increase the average achievable communication rates ...
Milad Johnny, Alireza Vahid
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