Ara es mostren els items 1-13 de 13

    • A general electromagnetic simulation tool to predict the microwave nonlinear response of planar, arbitrarily-shaped HTS structures 

      Parrón Granados, Josep; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Rius Casals, Juan Manuel; Duffo Ubeda, Núria; O'Callaghan Castellà, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-03-31)
      Article
      Accés obert
      This work describes a simulation tool being developed at UPC to predict the microwave nonlinear behavior of planar superconducting structures with very few restrictions on the geometry of the planar layout. The software ...
    • Analysis of microstrip antennas by multilevel matrix decomposition algorithm 

      Parrón Granados, Josep; Rius Casals, Juan Manuel; Heldring, Alexander; Úbeda Farré, Eduard; Mosig, Juan R (ESA, 1999)
      Text en actes de congrés
      Accés obert
      Integral equation methods (IE) are widely used in conjunction with Method of Moments (MoM) discretization for the numerical analysis of microstrip antennas. However, their application to large antenna arrays is difficult ...
    • Analysis of reflector and horn antennas using multilevel fast multipole algorithm 

      Heldring, Alexander; Rius Casals, Juan Manuel; Parrón Granados, Josep; Cardama Aznar, Ángel; Ligthart, L P (CIMNE, 2000)
      Text en actes de congrés
      Accés obert
      The MultiLevel Fast Multipole Algorithm (MLFMA) has been implemented in a Method of Moments code for arbitrarily shaped metal surfaces discretized in Rao, Wilton and Glisson (RWG) basisfunctions. The accuracy of the ...
    • Application of the multilevel decomposition algorithm to the frequency analysis of large microstrip antenna arrays 

      Parrón Granados, Josep; Rius Casals, Juan Manuel; Mosig, Juan R. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-03-31)
      Article
      Accés obert
      The application of integral equation methods based in the method of moments discretization to solve large antenna arrays is difficult due to the fact that the computational requirements increase rapidly with the number ...
    • Fast direct solution of method of moments linear system 

      Heldring, Alexander; Rius Casals, Juan Manuel; Tamayo Palau, José María; Parrón Granados, Josep; Úbeda Farré, Eduard (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-11)
      Article
      Accés obert
      A 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 ...
    • Figure of merit for multiband antennas 

      Rius Casals, Juan Manuel; Santos Blanco, M. Concepción; Parrón Granados, Josep (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-11-30)
      Article
      Accés obert
      This communication defines a figure of merit for multiband antennas that gives an objective quantification of the similarities between radiation patterns at the different antenna operating bands.
    • General electromagnetic simulation tool to predict the microwave nonlinear response of planar, arbitrarily-shaped HTS structures 

      Parrón Granados, Josep; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Rius Casals, Juan Manuel; Duffo Ubeda, Núria; O'Callaghan Castellà, Juan Manuel (2001-03)
      Article
      Accés obert
      This work describes a simulation tool being developed at UPC to predict the microwave nonlinear behavior of planar superconducting structures with very few restrictions on the geometry of the planar layout. The software ...
    • General electromagnetic simulation tool to predict the microwave nonlinear response of planar, arbitrarily-shaped HTS structures 

      Parrón Granados, Josep; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Rius Casals, Juan Manuel; Duffo Ubeda, Núria; O'Callaghan Castellà, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-03-31)
      Article
      Accés obert
      This work describes a simulation tool being developed at UPC to predict the microwave nonlinear behavior of planar superconducting structures with very few restrictions on the geometry of the planar layout. The software ...
    • Harmonic balance algorithms for the nonlinear simulation of HTS devices 

      Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Parrón Granados, Josep; Pons, J.; O'Callaghan Castellà, Juan Manuel; Rius Casals, Juan Manuel (KLUWER ACADEMIC/PLENUM PUBL, 2001-02-28)
      Article
      Accés obert
      This paper describes the application of Harmonic Balance algorithms to predict nonlinear effects in planar High Temperature Superconductors (HTS) microwave circuits. The resulting algorithms are fast and efficient and can ...
    • Integral equation mei applied to three-dimensional arbitrary surfaces 

      Rius Casals, Juan Manuel; Parrón Granados, Josep; Úbeda Farré, Eduard; Mosig, J R (Institution of Electrical Engineers, 1997-11)
      Article
      Accés obert
      The 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 ...
    • Method of moments enhancement technique for the analysis of Sierpinski pre-fractal antennas 

      Parrón Granados, Josep; Romeu Robert, Jordi; Rius Casals, Juan Manuel; Mosig, Juan R. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-08-31)
      Article
      Accés obert
      The numerical analysis of highly iterated Sierpinski microstrip patch antennas by method of moments (MoM) involves many tiny subdomain basis functions, resulting in a very large number of unknowns. The Sierpinski ...
    • Multilevel matrix decomposition algorithm for analysis of electrically large electromagnetic problems in 3-d 

      Rius Casals, Juan Manuel; Parrón Granados, Josep; Úbeda Farré, Eduard; Mosig, J R (1999-08)
      Article
      Accés restringit per política de l'editorial
      The multilevel matrix decomposition algorithm (MLMDA) has been implemented in 3-D for the solution of large electromagnetic problems. The electric field integral equation is solved for arbitrary surfaces discretized using ...
    • On the testing of the magnetic field integral equation with RWG basis functions in method of moments 

      Rius Casals, Juan Manuel; Úbeda Farré, Eduard; Parrón Granados, Josep (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001-11-30)
      Article
      Accés obert
      For electromagnetic analysis using method of moments (MoM), three-dimensional (3-D) arbitrary conducting surfaces are often discretized in Rao, Wilton and Glisson basis functions. The MoM Galerkin discretization of the ...