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Ara es mostren els items 73-92 de 248

    • Design and performance evaluation of a dielectric flat lens for millimeter-wave applications 

      Imbert Villà, Marc; Papió, Anna; de Flaviis, Franco; Jofre Roca, Lluís; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      In this paper, a practical fabrication of a dielectric flat lens for millimeter-wave applications is presented. A previous theoretical dielectric flat lens antenna design, consisting of a set of concentric rings with ...

    • Design and performance evaluation of a switched-beam antenna array for 60 GHz WPAN applications 

      Imbert Villà, Marc; Papió Toda, Anna; de Flaviis, Franco; Jofre Roca, Lluís; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      In this paper, the design and performance evaluation of a switched-beam antenna array to operate in the 60 GHz band for short-range WPAN applications is presented. In order to overcome the high path-loss attenuation at ...

    • Design of a bidirectional metamaterial spacer at 2.45 GHz 

      Imbert, Marc; Ferrer, Pere; González Arbesú, José María; Romeu Robert, Jordi (2010)
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    • Design of a dielectric flat lens antenna for 60 GHz WPAN applications 

      Imbert Villà, Marc; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2013)
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      In this paper we present the design of a dielectric flat lens antenna to operate in the 60 GHz band for WPAN applications. In order to overcome the specific atmospheric attenuation, which characterizes the propagation in ...

    • Desplegament de recursos en línea per a l’avaluació i l’autoaprenentage dels alumnes, i foment de l’especialització i competències transversals en el màster MERIT 

      Pradell i Cara, Lluís; Cardama Aznar, Ángel; Canal Bienzobas, Fernando; Jofre Roca, Lluís; Junyent Giralt, Gabriel; Herranz Luis, Jaime; Mallorquí Franquet, Jordi Joan; Nadeu Camprubí, Climent; Pagès Zamora, Alba Maria; Pradell i Cara, Lluís; Rius Casals, Juan Manuel; Rodríguez Fonollosa, Javier; Romeu Robert, Jordi; Coderch Collell, Marcel; Kerans, Mary Ellen; Law, Carolyn; García Hernández, Antonio; Gutiérrez Martos, David; Hernández Bonet, Antoni; Ferrer Bosch, Anna; Pérez Trufero, Javier; Torre Lara, Jordi de la; Torres Matabosch, Núria (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
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      El projecte es desenvolupa en el marc de la titulació oficial de màster MERIT del Departament de Teoria del Senyal i Comunicacions. El màster, orientat a la recerca i integrat dins del programa Erasmus Mundus, presenta ...

    • Diagnóstico de arrays. Estudio comparativo entre campo próximo rectangular y cilíndrico 

      Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
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    • Dielectric flat lenses with cylindrically distributed parameters for millimeter-wave applications 

      Imbert, M.; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      The design and performance evaluation of an inhomogeneous dielectric flat lens with the effective relative permittivity cylindrically distributed is presented. In order to achieve high-data rate wireless communications for ...

    • Dielectric properties of colon polyps, cancer, and normal mucosa: Ex vivo measurements from 0.5 to 20 GHz 

      Guardiola, Marta; Buitrago Ventura, Santiago; Fernández-Esparrach, Glòria; O'Callaghan Castellà, Juan Manuel; Romeu Robert, Jordi; Cuatrecasas, Miriam; Córdoba, Henry; González Ballester, Miguel A.; Camara, Oscar (2018-06-15)
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      Colorectal cancer is highly preventable by detecting and removing polyps, which are the precursors. 20 Currently, the most accurate test is colonoscopy, but still misses 22% of polyps due to visualization limitations. In ...

    • Digital portfolio for learning: A new communication channel for education 

      Coromina, Judit; Sabaté i Garriga, Ferran; Romeu Robert, Jordi; Ruiz, Ferran (2011)
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      Propósito: La Generalitat de Catalunya tiene previsto introducir antes del año 2017 el portafolio digital, una iniciativa vinculada con los nuevos métodos de aprendizaje. Constatado el creciente interés por el portafolio ...

    • Diseño optimizado de agrupaciones de antenas planas 

      Clavera, Jordi; Jiménez, Jesús; Romeu Robert, Jordi; Blanch Boris, Sebastián; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
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    • Diseño y medida de antenas para un equipo portatil a 1.89 ghz, y su interacción con el cuerpo humano 

      Mallorquí Franquet, Jordi Joan; de Mora, J.; Blanch Boris, Sebastián; Romeu Robert, Jordi; Cardama Aznar, Ángel (Universidad de Málaga, 1992)
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    • Dual band fss with fractal elements 

      Romeu Robert, Jordi; Rahmat-Samii, Y (Institution of Electrical Engineers, 1999-04)
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      Experimental and computed results of a frequency selective surface (FSS) based on a certain type of fractal element are presented. The fractal element is a two iteration Sierpinski gasket dipole. Owing to the dual band ...

    • Dual-band Sierpinski fractal monopole antenna 

      Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2000)
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      A new top-loaded reduced-sized dual-band (1.9 GHz and 3.5 GHz) monopole antenna for wireless communications is presented. The antenna provides better than -15 dB input return loss and keeps the same radiation pattern over ...

    • Efecto de errores aleatorios en las medidas en campo próximo en coordenadas cilíndricas 

      Romeu Robert, Jordi; Jofre Roca, Lluís (1991)
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      The far field noise due to a random near field noise is an stochastic process, and it will be shown that for a white gaussian space stationary near field noise, the far field noise is a gaussian non-stationary in elevation ...

    • Efecto de la variación angular en el vértice de alimentación de la antena fractal de Sierpinski 

      Puente Baliarda, Carles; Navarro Bernal, Manuel; Romeu Robert, Jordi; Pous Andrés, Rafael (1997)
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    • Effect of random errors in antenna cylindrical near-field measurements 

      Romeu Robert, Jordi; Jofre Roca, Lluís (Institution of Electrical Engineers, 1991-02)
      Article
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      A closed expression for the autocorrelation of the far field noise due to random near field noise in a cylindrical near to far field transformation is derived. This expression is employed to obtain bounds for the computed ...

    • Effect of random errors in cylindrical 

      Romeu Robert, Jordi; Jofre Roca, Lluís (. 1991 IEEE AP-S INTERNATIONAL SYMPOSIUM, 1991)
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      Expressions have been derived previously to predict the effect of random errors in planar near-field measurements. Similar equations for cylindrical near-field measurements are not available. Random errors are due to A/D ...

    • Efficient parametric characterization of the dynamic performance of an RFID IC 

      Capdevila Cascante, Santiago; Jofre Roca, Lluís; Romeu Robert, Jordi; Bolomey, J.Ch (2012)
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      In this letter, a measurement technique for a complete parametric characterization of the input impedance of an RFID IC is presented. The use of an SPDT switch to modulate the signal from the network analyzer provides ...

    • El "Espacio Innovador" y la red 

      Jofre Roca, Lluís; Solé Parellada, Francesc; Sabaté i Garriga, Ferran; Berenguer Sau, Jordi; Marqués Acosta, Fernando; Romeu Robert, Jordi; Torres Viñals, Jordi (Cátedra Telefónica-UPC, 2005-11)
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    • El 'Espacio Profesional' y la red, más allá del 2005 

      Jofre Roca, Lluís; Solé Parellada, Francesc; Sabaté i Garriga, Ferran; Ezquerra, Norberto; Romeu Robert, Jordi; Torres Viñals, Jordi (Càtedra Telefónica-UPC: Especialización Tecnológica y Sociedad del Conocimiento, 2003-08)
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