Envíos recientes

  • A multistate single-connection calibration for microwave microfluidics 

    Orloff, Nathan D.; Ma, Xiao; Little, Charles A. E.; Mateu Mateu, Jordi (IEEE Microwave Theory and Techniques Society, 2017-10-12)
    Artículo
    Acceso abierto
    With emerging medical, chemical, and biological applications of microwave-microfluidic devices, many researchers desire a fast and accurate calibration that can be achieved in a single connection. However, traditional ...
  • Three-element filtering antenna array designed by the equivalent circuit approach 

    Kufa, Martin; Raida, Zbynek; Mateu Mateu, Jordi (2016-09-01)
    Artículo
    Acceso abierto
    This paper introduces a design methodology of a third-order three-element patch array that has no filtering parts and yet behaves like a filtering antenna (filtenna). The design approach includes shaping the frequency ...
  • Analysis of the optimum gain of a high-pass l-matching network for rectennas 

    Gasulla Forner, Manuel; Jordana Barnils, José; Sánchez Robert, Francesc Josep; Berenguer Sau, Jordi (MDPI AG, 2017-07-25)
    Artículo
    Acceso abierto
    Rectennas, which mainly consist of an antenna, matching network, and rectifier, are used to harvest radiofrequency energy in order to power tiny sensor nodes, e.g., the nodes of the Internet of Things. This paper demonstrates ...
  • Tunable substrate integrated waveguide resonators 

    Mira, Fermin; Mateu Mateu, Jordi; Collado Gómez, Juan Carlos (2012-09-01)
    Artículo
    Acceso abierto
    This paper presents a novel approach for providing SIW tunable resonators by means of placing an additional metalized via-hole on the waveguide cavity. The via-hole contains an open-loop slot on the top metallic wall. The ...
  • Comprehensive circuit model of autolimiting superconductor devices 

    Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; Hueltes Escobar, Alberto; O'Callaghan Castellà, Juan Manuel; García Pastor, David; Perea Robles, Rafael; Joshi, N.; Lu, X.; Orloff, Nathan D.; Booth, James C. (2017-06-01)
    Artículo
    Acceso abierto
    This paper presents a phenomenological equivalent circuit to model the phenomenon occurring when a section of superconducting transmission line transits from a superconducting state to a normal state. This phenomenon allows ...
  • Three-port frequency-selective absorptive limiter 

    Hueltes Escobar, Alberto; Rocas Cantenys, Eduard; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Orloff, Nathan D.; Booth, James C.; García Pastor, David; Perea Robles, Rafael (2017-04-24)
    Artículo
    Acceso abierto
    This letter describes a novel three-port absorptive limiter for frequency-selective circuits based on a configuration similar to a conventional 90° hybrid coupler. This circuit uses the switching behavior of common diodes ...
  • On the trade-off between electrical power consumption and flight performance in fixed-wing UAV autopilots 

    Bertran Albertí, Eduardo; Sanchez Cerda, Alex (2016-11-01)
    Artículo
    Acceso abierto
    This paper sets out a study of the autopilot design for fixed wing Unmanned Aerial Vehicles (UAVs) taking into account the aircraft stability, as well as the power consumption as a function of the selected control strategy. ...
  • Adaptive envelope shaping for low and medium power amplifiers with dynamic supply 

    Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Ruiz Lavin, Maria de las Nieves; García Antón, José A. (2016-07-01)
    Artículo
    Acceso abierto
    This letter presents an adaptive envelope shaping (AES) method to linearize low and medium power amplifiers (PAs) with dynamic supply. This straightforward linearization solution results very useful for small cell or handset ...
  • Software radio reconfigurable hardware system (share) 

    Revés Ballesté, Xavier; Gelonch Bosch, Antonio José; Casadevall Palacio, Fernando José; Garcia, José L. (2000-08)
    Artículo
    Acceso restringido por política de la editorial
    Recent requirements and evolution of personal communications systems will tend to increase the number of applications that will run over the same hardware/software. While an option is providing this platform with all the ...
  • Redes radioeléctricas basadas en aeronaves estratosféricas : el ejemplo helinet 

    Delgado Penin, José A.; Bertran Albertí, Eduardo (2000-12)
    Artículo
    Acceso restringido por política de la editorial
  • Design and implementation of a wide-band real-time mobile channel emulator 

    Olmos Bonafé, Juan José; Gelonch Bosch, Antonio José; Casadevall Palacio, Fernando José; Femenias Nadal, Guillem (1999-05)
    Artículo
    Acceso abierto
    A new wide-band mobile channel emulator for the CODIT project is designed and implemented. The UMTS code-division testbed (CODIT R2020) is a research project within the European RACE-II program set up by the Commission of ...
  • Numerical optimization of hybrid dielectric/HTS resonators for surface impedance evaluation of HTS films 

    Collado Gómez, Juan Carlos; Gonzalo, David; Rozan, Edouard; O'Callaghan Castellà, Juan Manuel; Sans, C (1999-06)
    Artículo
    Acceso abierto
    This work describes an alternative to the traditional dielectric resonator topology used for measuring surface impedance in high temperature superconducting (HTS) films. A gap is introduced above the dielectric so that ...

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