Envíos recientes

  • Comportamiento de propagacion electromagnetica en el apilamiento de agujeros sublambda y agujeros propagantes 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Falcone Lanas, Francisco Javier; Campillo, Igor; Sorolla Ayza, Mario (2009)   Congreso / Biltzarra
    In this work, we provide more insight on the physics underlying the transmission through subwavelength hole arrays metaprism by comparing it with propagating hole arrays prism. We show the critical role that the size ...
  • Lentes metálicas basadas en el fenómeno de transmisión extraordinaria para conseguir índices de refracción negativos 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario; Campillo, Igor (2009)   Congreso / Biltzarra
    In this communication we report plano-concave and bi-concave metamaterial lenses based on the close stack of subwavelegnth hole arrays. Contrary to what is expected from cut-off holes, an engineered array of holes ...
  • Cooperative detection applied to THz imaging cameras 

    Lizarraga Cubillos, Juan; Betancourt Quiñones, Diego; Río Bocio, Carlos del (2009)   Congreso / Biltzarra
    THz technology for developing imaging systems has recently aroused great interest, mainly due to the large number of applications in which these frequencies can be used: security, vision in hard environments, etc. The ...
  • Experimental demonstration of phase resonances in metallic compound gratings with subwavelength slits in the millimeter wave regime 

    Navarro Cía, Miguel; Skigin, Diana C.; Beruete Díaz, Miguel; Sorolla Ayza, Mario (AIP Publishing, 2009)   Artículo / Artikulua
    We provide experimental evidence of phase resonances in metallic periodic structures in which each period comprises several subwavelength slits of the same width. We have analyzed and measured the response of these ...
  • Negative refraction through an extraordinary transmission left-handed metamaterial slab 

    Beruete Díaz, Miguel; Navarro Cía, Miguel; Sorolla Ayza, Mario; Campillo, Igor (American Physical Society, 2009)   Artículo / Artikulua
    In this work we present numerical and experimental results of negative refraction through a negative index metamaterial based on miniaturized extraordinary transmission stacked subwavelength hole arrays, also known as ...
  • Converging biconcave metallic lens by double-negative extraordinary transmission metamaterial 

    Navarro Cía, Miguel; Beruete Díaz, Miguel; Sorolla Ayza, Mario; Campillo, Igor (AIP Publishing, 2009)   Artículo / Artikulua
    In this letter we present simulation and experimental results of a left-handed converging biconcave metallic lens made of stacked subwavelength hole arrays SSHAs working in the millimeter wave range with additional ...
  • Design of beam-forming networks for scannable multi-beam antenna arrays using CORPS 

    Panduro, M.A.; Río Bocio, Carlos del (EMW Publishing, 2008)   Artículo / Artikulua
    This paper deals with the design of beam-forming networks (BFN) for scannable multibeam antenna arrays using Coherently Radiating Periodic Structures (CORPS). This design of CORPS-BFN considers the optimization of the ...
  • EBG superstrate antenna for WAAS bands 

    Osés de León, Ángel; Iriarte Galarregui, Juan Carlos; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón (2008)   Congreso / Biltzarra
    Multiband antennas can simplify considerably the complexity of receivers and transmitters, reducing the size and the mass of the conventional configurations. On the other hand, applications with high directivity requirements ...
  • Polarization selection with stacked hole array metamaterial 

    Beruete Díaz, Miguel; Navarro Cía, Miguel; Sorolla Ayza, Mario; Campillo, Igor (AIP Publishing, 2008)   Artículo / Artikulua
    Polarization rotation or selection appears in materials with optical activity, or those with Faraday effect, or in liquid crystals. In this letter we present a structure, with an analogous response, using stacked ...
  • Low profile multi-frequency dipole antenna array based on planar meta-surfaces 

    Sáenz Sainz, Elena; Ikonen, Pekka; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Tretyakov, Sergei; Maagt, Peter de (IEEE, 2007)   Congreso / Biltzarra
    In this paper, the radiation performance of a low profile multi-frequency dipole antenna array with a planar meta-surface is presented. The meta-surface consists of two closely located parallel grids of short dipoles and ...
  • Utilizando CORPS-BFN para alimentar sistemas de antenas de múltiples haces 

    Betancourt Quiñones, Diego; Río Bocio, Carlos del (2007)   Congreso / Biltzarra
    This paper present an application of the Coherently Radiating Periodic Structures - CORPS on the design of a Beam Forming Network -BFN. The Named CORPS-BFN is a novel feeding network with special behaviour characteristics ...
  • Planar DNG superstrate for dipole antenna gain enhancement 

    Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Ikonen, Pekka; Tretyakov, Sergei; Maagt, Peter de (2007)   Congreso / Biltzarra
    In this paper, a volumetric double-negative (DNG) superstrate based on grids of dipoles and wires for dipole antenna applications is proposed.
  • Using CORPS-BFN to feed multibeam antenna systems 

    Betancourt Quiñones, Diego; Río Bocio, Carlos del (2007)   Congreso / Biltzarra
    In this paper, a simple example of application of the CORPS-BFN concept has been presented. A multibeam antenna system is seen as a small part of the human eye, and therefore, improving the similarity of the whole system ...
  • A metamaterial T-junction power divider 

    Sáenz Sainz, Elena; Cantora Álvarez, Alejandro; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón; Maagt, Peter de (IEEE, 2007)   Artículo / Artikulua
    A metamaterial based compact microstrip T-junction power divider working at 10 GHz is proposed. The metamaterial unit cell consists of microstrip gaps and via holes whose behavior is equivalent to the combination of ...
  • Resultados experimentales de la mejora de potencia radiada por un dipolo mediante un superstrato left-handed 

    Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Maagt, Peter de (2006)   Congreso / Biltzarra
    In this paper a comparison between the measured radiation performances of a single dipole and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell is presented. First of all the ...
  • Obteniendo imágenes de sistemas CORPS 

    Gómez, Alfonso; Río Bocio, Carlos del (2006)   Congreso / Biltzarra
    From the previous research inside the Antenna Group of the Public University of Navarra regarding the working principles of the human eye, one of the conclusions was that the reconstructed image in the surface of the ...
  • Diseño de alimentadores optimizados para la cámara anecoica de la Universidad de Limoges 

    Teniente Vallinas, Jorge; Arnaud, Eric; Gonzalo García, Ramón; Río Bocio, Carlos del (2006)   Congreso / Biltzarra
    In this paper, high technology optimized feed horn designs are presented. These feed horns have been designed to improve the quite zone size and behaviour of the CATR of the CREAPE research team at Limoges University. Very ...
  • Redes de alimentación de agrupaciones basadas en CORPS 

    Betancourt Quiñones, Diego; Río Bocio, Carlos del (2006)   Congreso / Biltzarra
    A new beam-forming Network concept is introduced. This Network is based in the design principles of CORPS. The new proposed structure presents an improvement in design over the traditional beam-forming Network -BFN ...
  • Boresight radiation of a dipole antenna with a uniform or non-uniform left handed superstrate 

    Sáenz Sainz, Elena; Gonzalo García, Ramón; Ederra Urzainqui, Íñigo; Maagt, Peter de (2006)   Congreso / Biltzarra
    In this paper measurements of the radiation performances of a dipole fed by a coaxial balun and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell are compared. Two types ...
  • Enhancement of the power radiated by a dipole antenna at boresight by means of a left handed superstrate 

    Sáenz Sainz, Elena; Ederra Urzainqui, Íñigo; Gonzalo García, Ramón; Maagt, Peter de (IEEE, 2006)   Congreso / Biltzarra
    In this paper a comparison between the measured radiation performances of a single dipole and a dipole with a left handed superstrate based on a finite periodic repetition of a unit cell is presented. First of all the ...

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