Recent Submissions

  • Track detection in railway sidings based on MEMS gyroscope sensors 

    Broquetas Ibars, Antoni; Comerón Tejero, Adolfo; Gelonch Bosch, Antonio José; Fuertes Armengol, José Mª; Castro Fernández, José Antonio; Felip, Damià; López Márquez, Miguel Ángel; Pulido, Jose Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2012-11-23)
    Article
    Open Access
    The paper presents a two-step technique for real-time track detection in single-track railway sidings using low-cost MEMS gyroscopes. The objective is to reliably know the path the train has taken in a switch, diverted or ...
  • Nonlinear effects of SiO2 layers in bulk acoustic wave resonators 

    Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; García Pastor, David; Perea Robles, Rafael; Hueltes Escobar, Alberto; Kreuzer, Susanne; Aigner, Robert (IEEE Microwave Theory and Techniques Society, 2017-12-29)
    Article
    Open Access
    This paper presents the development of a comprehensive distributed circuit model to account for the existing nonlinear effects in bulk acoustic wave (BAW) resonators. The comprehensiveness of the model and its distributed ...
  • Teaching telecommunication standards: bridging the gap between theory and practice 

    Gelonch Bosch, Antonio José; Marojevic, Vuk; Gómez Miguelez, Ismael (2017-05)
    Article
    Open Access
    Telecommunication standards have become a reliable mechanism to strengthen collaboration between industry and research institutions to accelerate the evolution of communications systems. Standards are needed to enable ...
  • Waveguide filter modeling and simulation using mode-matching, fullwave network analysis and swarm optimization 

    Bouchachi, Islem; Mateu Mateu, Jordi; Lahdi Riabi, Mohamed (2017-02-01)
    Article
    Restricted access - publisher's policy
    The paper presents the synthesis of forth-order waveguide bandpass filter, employing a symmetric configuration and leading to symmetric response with four poles and two transmission zeroes. For this synthesis we aimed to ...
  • 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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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)
    Article
    Open Access
    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 ...

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