Now showing items 1-20 of 27

  • An experimental study of multi-radio platform coexistence in the 5 GHz band for railway applications 

    Vlad, Adrián; Hierro, José; González, Jesús; Martinez, R.; Navarro, Isabel; Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Collado Gómez, Juan Carlos; González Arbesú, José María; Alonso Zárate, Luis Gonzaga; Valenzuela González, José Luis; Laya Romero, Andrés Ernesto; Flores, Enrique (Springer Verlag, 2011)
    Conference report
    Restricted access - publisher's policy
    This paper studies the practical challenges that arise due to the coexistence of two wireless technologies, both operating in the license-exempt 5 GHz band. In particular, WiFi and WiMAX equipment have been used in the ...
  • Are space-filling curves efficient small antennas? 

    González Arbesú, José María; Blanch Boris, Sebastián; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-09-30)
    Article
    Open Access
    The performance of space-filling curves used as small antennas is evaluated in terms of quality factor and radiation efficiency. The influence of their topology is also considered. Although the potential use of these ...
  • Caracterización de antenas mediante termografías de infrarrojos 

    González Arbesú, José María; Romeu Robert, Jordi (1998)
    Conference report
    Open Access
  • Caracterización de antenas mediante termografías de infrarrojos 

    González Arbesú, José María (Universitat Politècnica de Catalunya, 2000-04-06)
    Doctoral thesis
    Open Access
    La presente Tesis Doctoral toma como base los trabajos iniciados por investigaciones de la Universidad de Colorado(USA) orientados hacia la medida de las correintes superficiales inducidas por radiaciones electromagneticas ...
  • Comments on "On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using Koch curves" 

    González Arbesú, José María; Rius Casals, Juan Manuel; Romeu Robert, Jordi (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-06-30)
    Working paper
    Open Access
    Comentaris referits a l'article següent: K. J. Vinoy, J. K. Abraham, and V. K. Varadan, “On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using Koch curves,” IEEE ...
  • Comprobación del comportamiento autosimilar de las distribuciones de corriente sobre la superficie de la antena fractal de Sierpinski mediante termografías de infrarrojos 

    González Arbesú, José María; Puente Baliarda, Carles; Romeu Robert, Jordi (1998)
    Conference report
    Open Access
  • Concentric annular-ring microstrip antenna with circular polarization 

    Ramirez, M.; Parrón, Josep; González Arbesú, José María; Gemio, J. (2011)
    Article
    Restricted access - publisher's policy
    In this letter,we present a concentric annular-ring microstrip antenna that covers the bands of Galileo (E5a, E5b, E1, E2, L1), GPS (L1, L2, L5), and GLONASS (L1, L3). This microstrip antenna is fed by four apertures ...
  • Creació de recursos en línea per a l’autoaprenentage, foment de l’esperit crític i emprenedor i formació d’un comité d’avaluació externa en el màster MERIT 

    Pradell i Cara, Lluís; Cabrera-Bean, Margarita; Canal Bienzobas, Fernando; Cardama Aznar, Ángel; Gasull Llampallas, Antoni; González Arbesú, José María; Giró Nieto, Xavier; Heldring, Alexander; Herranz Luis, Jaime; Jofre Roca, Lluís; Mallorquí Franquet, Jordi Joan; Nadeu Camprubí, Climent; Olmos Bonafé, Juan José; Romeu Robert, Jordi; Rius Casals, Juan Manuel; Torres Torres, Francisco; Úbeda Farré, Eduard; Coderch Collell, Marcel; Kerans, Mary Ellen; Ros Giralt, Jordi; García, Antonio; González Font, Blanca; Guardiola Garcia, Marta; Hernández, Antoni; Melgarejo, Natali; Mestres, Albert (2009-02-12T10:25:51Z)
    Conference lecture / Conference report
    Open Access
    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 ...
  • Design of a bidirectional metamaterial spacer at 2.45 GHz 

    Imbert, Marc; Ferrer, Pere; González Arbesú, José María; Romeu Robert, Jordi (2010)
    Conference report
    Open Access
  • Feed-forward technique to measure the reflection coefficient under CW high-power signals 

    Collado Gómez, Juan Carlos; González Rodríguez, Marta; González Arbesú, José María; Mateu Mateu, Jordi; Verdú Tirado, Jordi; Hueltes Escobar, Alberto (IEEE Microwave Theory and Techniques Society, 2018-10-01)
    Article
    Open Access
    This paper describes a measurement setup to obtain the reflection coefficient response over the frequency of a given device when this is subjected to a single-tone high-power (HP) signal. The proposed system is based on a ...
  • GA design of small thin-wire antennas: comparison with Sierpinski-type prefractal antennas 

    Fernández Pantoja, Mario; García Ruíz, Francisco Javier; Rubio Bretones, Amelia C.; González García, S.; Gómez Martín, Rafael A.; González Arbesú, José María; Romeu Robert, Jordi; Rius Casals, Juan Manuel; Werner, P. L.; Werner, Douglas H. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-06-30)
    Article
    Open Access
    A new set of genetically generated electrically small thin-wire antennas with a better performance than that of several families of Sierpinsky prefractal monopoles of the same electrical size at resonance is presented
  • GA design of wire pre-fractal antennas and comparison with other Euclidean geometries 

    Fernández Pantoja, Mario; García Ruíz, Francisco Javier; Rubio Bretones, Amelia C.; Gómez Martín, Rafael A.; González Arbesú, José María; Romeu Robert, Jordi; Rius Casals, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-11-30)
    Article
    Open Access
    A multi-objective genetic algorithm (GA) has been applied in conjunction with the numerical electromagnetic code (NEC) to the optimization of wire pre-fractal Koch-like antennas in terms of bandwidth, efficiency, and ...
  • Infrared thermograms applied to near-field testing 

    González Arbesú, José María; Aguasca Solé, Alberto; Blanch Boris, Sebastián; Romeu Robert, Jordi (European Space Agency, 2000)
    Conference report
    Open Access
    Electromagnetic fields close to radiant structures can be measured quickly using an infrared camera. Examples of induced fields by wire antennas over a detection screen at distances shorter than one wavelength are presented. ...
  • Infrared thermograms applied to near-field testing 

    González Arbesú, José María; Aguasca Solé, Alberto; Romeu Robert, Jordi (IEE-INST ELEC ENG, 1999-05-31)
    Article
    Open Access
    Electromagnetic fields close to radiant structures can be measured quickly using an infrared camera. Examples of induced fields by wire antennas over a detection screen at distances shorter than one wavelength are presented. ...
  • Metamateriales en microondas y antenas 

    González Arbesú, José María; Úbeda Farré, Eduard; Romeu Robert, Jordi (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2003)
    Article
    Open Access
    Desde 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 ...
  • Microstrip patch antenna design using artificial material loadings 

    Calafell Rueda, Irena; Ferrer, Pere; González Arbesú, José María; Romeu Robert, Jordi (2010)
    Conference report
    Open Access
    Patch antennas filled using different material loadings, both homogeneous and dispersive, are reviewed in order to assess its FBW value. A compact formulation proposed by Yaghjian and Best [1] to compute the FBW of antennas ...
  • New technique to cancel IMD3 in electroacoustic filters 

    González Rodríguez, Marta; Collado Gómez, Juan Carlos; González Arbesú, José María; Mateu Mateu, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference lecture
    Restricted access - publisher's policy
    This work presents a new technique to cancel third-order intermodulation distortion (IMD3) by using a low frequency injected tone to generate a second-order intermodulation product (IMD2) that fall exactly at the same ...
  • Nonlinear effects of electrode and bragg reflector materials in BAW resonators 

    García Pastor, David; González Rodríguez, Marta; Hueltes Escobar, Alberto; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; González Arbesú, José María; Kreuzer, Susanne; Aigner, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Restricted access - publisher's policy
    This work presents a broadband characterization and modeling of the second harmonic nonlinear response in Bulk acoustic wave (BAW) resonators. The proposed circuit model is based on the constitutive equations describing ...
  • Outline process from the synthesis towards the nonlinear modeling of Bulk Acoustic Wave filters 

    Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; Hueltes Escobar, Alberto; Perea Robles, Rafael; García Pastor, David; González Rodríguez, Marta; González Arbesú, José María (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    This work presents the nonlinear modeling of a real acoustic wave filter set at the cellular commercial receiver band B40. The paper outlines the synthesis procedure of the acoustic filter and presents the filter performance ...
  • Passive devices for UWB systems 

    Mira, Fermín; Mollfulleda, Antonio; Miskovsky, Pavel; Mateu Mateu, Jordi; González Arbesú, José María (Sciyo.com, 2010-09)
    Part of book or chapter of book
    Open Access