Results 111 to 120 of about 13,719,025 (270)
Absorption of EM energy by human body in the vicinity of the GSM base station antenna
Journal of Telecommunications and Information Technology, 2005 A hybrid method is proposed for specific absorption rate analysis in a human body located in the near field of typical GSM base-station panel antenna. The method combines FDTD technique with analytical description of the near field of isolated antenna ...
Dariusz Wójcik +2 more
doaj +1 more source
PERMITTIVITY RESEARCH OF BIOLOGICAL SOLUTIONS IN GIGAHERTZ FREQUENCY RANGE [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2017 Subject of Research. We present results of permittivity research in gigahertz frequency range for saline and glucose solutions used in medical practice. Experiment results are substantiated theoretically on the basis of Debye-Cole model.
Anton S. Demin +3 more
doaj +1 more source
Near-field edge fringes at sharp material boundaries [PDF]
, 2017 We have studied the formation of near-field fringes when sharp edges of materials are imaged using scattering-type scanning near-field optical microscope (s-SNOM).
Mark I. Stockman (1766890) +3 more
core +1 more source
Near-Field Angular Scan Enhancement of Antenna Arrays Using Metasurfaces [PDF]
, 2020 In this publication we continue our previous work on extending the angular scan range of phased arrays using metasurfaces. We consider in detail scan enhancement using a single metasurface lens in the near-field of a source and provide analytical ...
George V. Eleftheriades (3970625) +1 more
core +1 more source
Near-field Imaging of Optical Resonance Modes in Silicon Metasurfaces Using Photoelectron Microscopy [PDF]
, 2023 Precise control of light-matter interactions at the nanoscale lies at the heart of nanophotonics. Yet their experimental examination is challenging since the corresponding electromagnetic near-field is often confined within volumes below the resolution ...
Alex Boehm (3173151) +7 more
core +1 more source
Holographic MIMO Communications Exploiting the Orbital Angular Momentum
IEEE Open Journal of the Communications Society, 2023 This study delves into the potential of harnessing the orbital angular momentum (OAM) property of electromagnetic waves in near-field and line-of-sight scenarios by utilizing large intelligent surfaces, in the context of holographic multiple-input ...
Giulia Torcolacci +2 more
doaj +1 more source
Collective modes and terahertz near-field response of superconductors [PDF]
, 2020 We theoretically study the low energy electromagnetic response of BCS type superconductors focusing on propagating collective modes that are observable with THz near field optics. The interesting frequency and momentum range is $\omega < 2\Delta$ and $q <
Zhiyuan Sun +3 more
semanticscholar +1 more source
Near field enhancements from angled surface defects : a comparison of scanning laser source and scanning laser detection techniques [PDF]
, 2011 Enhancement of the Rayleigh wave signal amplitude at a surface defect, due to interference of incident, reflected and mode converted waves, has been reported by several authors, and it has been suggested that this could be used as a fingerprint of the ...
Edwards, R. S. (Rachel S.) +5 more
core +1 more source
Revista Facultad de Ingeniería Universidad de Antioquia, 2012 In this paper the application of the Genetic Algorithms (GA) as a search method of a geometric configuration of elementary dipoles that solve the inverse problem of electromagnetic radiation are reported. The inverse problem of electromagnetic radiation
Arturo Rangel Merino +2 more
doaj +1 more source
Near-field Cosmology with the VLT [PDF]
, 2008 5 pages, 3 figures, to appear in the proceedings of the ESO workshop "Science with the VLT in the ELT era", Springer Astrophysics and Space Science Proceedings, editor A ...
Mieske, Steffen, Jerjen, Helmut
openaire +2 more sources