Exploració per autor "Cardama Aznar, Ángel"Més informació

Ara es mostren els items 43-62 de 87

    • High frequency RCS graphical processing 

      Rius Casals, Juan Manuel; Cardama Aznar, Ángel; Vall-Llossera Ferran, Mercedes Magdalena (1990)
      Text en actes de congrés
      Accés obert
      The results presented at this workshop have been obtained with a new and original approach: hardware graphical processing. High-frequency RCS of complex radar targets is computed in real time using a 3-D graphic workstation. ...

    • High-Frequency RCS of Perfectly Conducting or Coated Complex Objects in Real Time 

      Rius Casals, Juan Manuel; Vall-Llossera Ferran, Mercedes Magdalena; Cardama Aznar, Ángel (1991)
      Text en actes de congrés
      Accés obert
      This paper present a new and original approach to compute high-freqency radar cross section (RCS) of complex radar targets in real time using a 3-D graphic workstation. The aircraft is modelled with I-DEAS solid modeling ...

    • Impedancia de entrada de las antenas impresas circulares 

      Ferrando Bataller, Miquel; Cardama Aznar, Ángel (Universidad de Cantabria, 1982)
      Text en actes de congrés
      Accés obert

    • Integral formulation of the measured equation of invariance: a novel sparse matrix boundary element method 

      Rius Casals, Juan Manuel; Pous Andrés, Rafael; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-05-01)
      Article
      Accés obert
      A novel integral formulation of the measured equation of invariance method is derived from the reciprocity theorem and implemented for perfectly conducting (PEC) 2-D scattering problems. This formulation uses the electric ...

    • Laboratori docent d'ones de radiació i ones guiades 

      Cardama Aznar, Ángel; Mallorquí Franquet, Jordi Joan; Romeu Robert, Jordi; Torres Torres, Francisco (Edicions UPC, 1997-01-01)
      Capítol de llibre
      Accés restringit per política de l'editorial

    • Líneas de investigación en técnicas de alta frecuencia 

      Bará Temes, Francisco Javier; Cardama Aznar, Ángel; Reyes Davó, Elías de Los (Universitat Politècnica de Barcelona, 1980-12)
      Text en actes de congrés
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      Se presentan las realizaciones en investigación y desarrollo de los Grupos de Cátedra de Microondas, Antenas y Propagación de Ondas, Radiolocalización, y se describen las líneas futuras de investigación que desarrollarán ...

    • Low cost transmission line demonstrator for a novel intermediate level communication engineering laboratory 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Cardama Aznar, Ángel; Romeu Robert, Jordi; Galindez, Oscar (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1998-11-30)
      Article
      Accés obert
      This paper is devoted to the description of a transmission line laboratory demonstrator for intermediate level communication engineering students, within a course on radiation and guided waves. Student activities have been ...

    • Low cost transmission line demonstrator for a novel intermediate level communication engineering laboratory 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Cardama Aznar, Ángel; Romeu Robert, Jordi; Galíndez, O (1998-11)
      Article
      Accés obert
      This paper is devoted to the description of a transmission line laboratory demonstrator for intermediate level communication engineering students, within a course on radiation and guided waves. Student activities have been ...

    • Medida de antenas en campo próximo sobre una superficie cilíndrica 

      Jofre Roca, Lluís; Cardama Aznar, Ángel; Ferrando Bataller, Miquel (Unión Científica Internacional de Radio (URSI), 1983)
      Text en actes de congrés
      Accés obert
      An efficient formulation for far-field reconstruction from near-field measurements on a cylinder is presented. An experimental setup is devoted to the study of the influence on the reconstruction of the different geometric ...

    • Medida de antenas en un sistema de campo próximo semicompacto 

      Cardama Aznar, Ángel; Ferrando Bataller, Miquel; Jofre Roca, Lluís (1987)
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      Accés obert
      A synthesis method of uniform cylindrical waves of finite extension is presented, based on an optimized linear current distribution, obtained by an iterative method in the espectral domain. Substituting in a cylindrical ...

    • Medida de características de dispositivos fotoemisores para comunicaciones ópticas 

      Cardama Aznar, Ángel; Ferrando Bataller, Miquel (1981)
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      Accés obert
      Experimental procedures for the measurement of spectral and frequency responses, power and radiation patterns of emitters for optical communications are presented, with a description of the instrumentation developed and ...

    • Medida de RCS con onda esférica en campo próximo 

      Palau, J.; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (Universidad de Málaga, 1992)
      Text en actes de congrés
      Accés obert

    • Medida de sección recta radar con onda esférica en campo próximo 

      Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (1992)
      Text en actes de congrés
      Accés obert
      The paper presents a new Inverse Synthetic Aperture Radar (ISAR) algorithm intended for Radar Cross Section (RCS) measurement from scattering fields. The method is based on a spherical wave near-field illumination of the ...

    • Medida no destructiva del perfil de índice en fibras ópticas 

      Cardama Aznar, Ángel; Jofre Roca, Lluís (1981)
      Text en actes de congrés
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      Non destructive methods for the measurement of index profiles of optical fibers are presented, with emphasis placed on those based on scattering by incoherent light and the focusing method. Computer programs for calculation ...

    • Medida y optimización de alimentadores primarios para reflectores parabólicos 

      Ferrando Bataller, Miquel; Jofre Roca, Lluís; Cardama Aznar, Ángel (Universidad de Sevilla, 1984)
      Text en actes de congrés
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      We describe in this paper a theoretical and experimental procedure for the caracterization of parabolic antenna feeds. The experimental set-up and the algorithms for the measurement and optimization of these antennas are ...

    • Métodos numéricos de análisis de antenas parabólicas 

      Jofre Roca, Lluís; Ferrando Bataller, Miquel; Cardama Aznar, Ángel (Universidad de Cantabria, 1982)
      Text en actes de congrés
      Accés obert
      An algorithm, based in the Bessel- Jacobi method, is presented wich allows to obtain an approximation for the radiation characteristics of parabolic-reflector antennas from knowledge of the field distribution on the two ...

    • Modal analysis of coupling problems in optical fibers 

      Cardama Aznar, Ángel; Kornhauser, Edward (IEEE Microwave Theory and Techniques Society, 1975-01)
      Article
      Accés obert

    • Near field in the vicinity of wireless base-station antennas: an exposure compliance approach 

      Blanch Boris, Sebastián; Romeu Robert, Jordi; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-05-31)
      Article
      Accés obert
      Great social concern has risen about the potential health hazard of living near a cellular telephony base-station antenna, and certain technical questions have been posed on the appropriate way to measure exposure in ...

    • Non-invasive active thermometry with a microwave tomographic scanner in hyperthermia treatments in hyperthermia treatments 

      Mallorquí Franquet, Jordi Joan; Broquetas Ibars, Antoni; Jofre Roca, Lluís; Cardama Aznar, Ángel (1992-10)
      Article
      Accés obert
      In this work the active microwave tomographic imaging of tissue temperature changes induced in deep hyperthermia treatments is studied. The thermal images would allow to monitor and optimize the treatment, increasing its ...

    • Obtención y medida de dieléctricos para la construcción de maquetas biológicas en microondas 

      Broquetas Ibars, Antoni; Elias Fusté, Antoni; Cardama Aznar, Ángel (Universidad Politécnica de Madrid (UPM), 1988)
      Text en actes de congrés
      Accés obert
      Studies about microwave imaging systems require complex models of biological materials to test the performance of prototypes in realistic situations. Tissue phantom materials have been studied and measured in order to ...