Exploració per autor "Úbeda Farré, Eduard"
Ara es mostren els items 29-48 de 93
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Examen MQ. Part tècnica
(Universitat Politècnica de Catalunya, 2018-04-11)
Examen
Accés restringit a la comunitat UPC -
Facet-oriented discretization of the electric-magnetic field integral equation for the accurate scattering analysis of perfectly conducting sharp-edged objects
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we present the discretization in Method of Moments of the Electric-Magnetic Field Equation with the divergence-Taylor-Orthogonal basis functions, a facetoriented set of basis functions. We show for a ... -
Fast direct solution of method of moments linear system
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-11)
Article
Accés obertA novel algorithm, the compressed block decomposition (CBD), is presented for highly accelerated direct (non iterative) method of moments (MoM) solution of electromagnetic scattering and radiation problems. The algorithm ... -
Fast shadowing computation in physical optics surface
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialGRECO code has been updated by replacing the graphical processing technique for computation of Physical Optics surface integral by a hybrid CPU-graphical processing approach. The resulting code needs more CPU power for ... -
Frequency extrapolation of IE-MEI linear system Coefficients in 2D
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe Integral Equation MEI (IE-MEI) method for the sparsification of Method of Moments linear system matrix is revisited here. It achieves cpu computation time and storage memory requirements of order O(N ) (for 2D perfectly ... -
Geometric algebra formulation of the Calderon Projector
(2019)
Comunicació de congrés
Accés restringit per política de l'editorialGeometric Algebra provides a mathematical frame-work that allows to express many equations of physics in a more compact way [1]. It unifies the electric and the magnetic field in a single mathematical object: a multivector. ... -
GRECO Code Rejuvenated: hybrid CPU-graphical processing
(IEEE, 2013)
Text en actes de congrés
Accés restringit per política de l'editorialGRECO code has been updated by replacing the graphical processing technique for computation of Physical Optics surface integral by a hybrid CPU-graphical processing approach. The resulting code needs more CPU power for ... -
GRECO: 30 years of graphical processing techniques for RCS computation
(2018)
Text en actes de congrés
Accés obertThis contribution to the special session in honor of Prof. Rafael Gómez-Martín will address the 30 year development of graphical processing techniques (GRECO) for fast computation of Radar Cross Section (RCS) of ... -
Grid design benchmark on sheets with nonzero thickness
(Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
Text en actes de congrés
Accés obertThe conventional scattering analysis of perfectly conducting sheets ignores the scattering contribution of the rim. The so-called thin-surface scheme arises from the discretization of the Electric-field Integral Equation ... -
Grid-robust discretization of integral equations in the electromagnetic scattering analysis of homogeneous targets with geometric singularities
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés restringit per política de l'editorialThe conventional method-of-moment schemes of discretization for the scattering analysis of homogeneous targets, perfectly conducting or dielectric, rely on edge-based basis functions. This restricts the modelling of the ... -
Hierarchical discretization of the PMCHWT formulation with jump current discontinuities for the scattering analysis of ferromagnetic objects
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés obertIn the discretization of the Poggio-Miller-Chan-Harrington-Wu-Tsai (PMCHWT) formulation by the Method of Moments (MoM), the unknown currents are usually expanded with the divergence-conforming RWG set. Recently, the ... -
Improved accuracy in the scattering analysis of arbitrarily shaped ferromagnetic objects
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe electromagnetic scattering analysis of arbitrarily shaped ferromagnetic bodies is usually carried out with the Poggio-Miller-Chan-Harrington-Wu-Tsai (PMCHWT) integral equation. In the Method of Moments (MoM) discretization ... -
Improved accuracy in the scattering analysis of infinitely long ferromagnetic objects
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe scattering of transversal magnetic (TM) electromagnetic waves impinging on infinitely long homogeneous ferromagnetic objects is usually analyzed with the Poggio-Miller-Chan-Harrington-Wu-Tsai (PMCHWT) integral equation. ... -
Improvements in randomized matrix compression methods for numerical analysis of antennas and scatterers
(Luis Landesa-Porras, 2023)
Comunicació de congrés
Accés obertWe propose a randomized Pseudo Skeleton (or CUR) Approximation method to compress the H-matrices of linear systems that arise in the discretization of integral equations in electromagnetic scattering. This method is highly ... -
Improving the accuracy of the adaptive cross approximation with a convergence criterion based on random sampling
(2020-07-27)
Article
Accés obertThe accuracy of the Adaptive Cross Approximation (ACA) algorithm, a popular method for the compression of low rank matrix blocks in Method of Moment computations, is sometimes seriously compromised by unpredictable errors ... -
Integral Equation MEI (IE-MEI) analysis of homogeneus dielectric and plasmonic media in 2D
(2015)
Text en actes de congrés
Accés obertThis paper revisits the IE-MEI method and proposes a new formulation for high-loss didectric piecewise-homogeneous media. The aim of this work is lo assess if the bigh localization of surface plasmon polarltons helps in ... -
Integral equation mei applied to three-dimensional arbitrary surfaces
(Institution of Electrical Engineers, 1997-11)
Article
Accés obertThe authors present a new formulation of the integral equation of the measured equation of invariance (MEI) as a confined field integral equation discretised by the method of moments, in which the use of numerically derived ... -
Iterative method of moments solution of problems involving electrically large and concave geometries
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents a study of the scaling with frequency (computational complexity) of preconditioned iterative solution, using the Multilevel Fast Multipole Method, of a class of radiation and scattering problems that ... -
Metamateriales en microondas y antenas
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2003)
Article
Accés obertDesde la década de los '80 una gran variedad de materiales artificiales (no existentes en la naturaleza) son intensivamente estudiados por sus inusitadas y sorprendentes propiedades electromagnéticas (como partes reales ... -
Monte Carlo methods in electromagnetic scattering computations
(Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
Text en actes de congrés
Accés obertThe solution of the electromagnetic scattering problem by the Method of Moments often leads to huge systems of equations that require large computational resources. In parallel computing environments, communication between ...
