Recent Submissions

  • On the wireless microwave sensing of bacterial membrane potential in microfluidic-actuated platforms 

    Jofre Cruanyes, Marc; Jofre Cruanyes, Lluís; Jofre Roca, Lluís (Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-14)
    Article
    Open Access
    The investigation of the electromagnetic properties of biological particles in microfluidic platforms may enable microwave wireless monitoring and interaction with the functional activity of microorganisms. Of high relevance ...
  • On differential imaging using electromagnetic simulation for vehicular antenna signature analysis 

    Solano Pérez, José Antonio; Martinez Ingles, Maria Teresa; Molina García-Pardo, José María; Romeu Robert, Jordi; Jofre Roca, Lluís; Ballesteros Sánchez, Christian; Rodríguez Rodríguez, José Víctor; Mateo Aroca, Antonio; Guzmán Quirós, Raúl (Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-30)
    Article
    Open Access
    The current trend in vehicles is to integrate a wide number of antennae and sensors operating at a variety of frequencies for sensing and communications. The integration of these antennae and sensors in the vehicle platform ...
  • Acceleration of Born series by change of variables 

    López Menchón, Héctor; Rius Casals, Juan Manuel; Heldring, Alexander; Úbeda Farré, Eduard (2021-02-26)
    Article
    Open Access
    In this work, we propose a method to enhance the convergence of the Born series. The Born series is widely used in scattering theory, but its convergence is only guaranteed under certain restrictive conditions which limit ...
  • Low-rank matrix factorization method for multiscale simulations: a review 

    Li, Mengmeng; Ding, Dazhi; Heldring, Alexander; Hu, Jun; Chen, Rushan; Vecchi, Giuseppe (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Article
    Open Access
    In this paper, a review of the low-rank factorization method is presented, with emphasis on their application to multiscale problems. Low-rank matrix factorization methods exploit the rankdeficient nature of coupling ...
  • Accurate, grid-robust and versatile combined-field discretization for the electromagnetic scattering analysis of perfectly conducting targets 

    Úbeda Farré, Eduard; Sekulic, Ivan; Rius Casals, Juan Manuel; Heldring, Alexander (2020-04-15)
    Article
    Restricted access - publisher's policy
    Recent implementations of the Electric-Field Integral Equation (EFIE) for the electromagnetic scattering analysis of perfectly conducting targets rely on the electric current expansion with the monopolar-RWG basis functions, ...
  • Improving the accuracy of the adaptive cross approximation with a convergence criterion based on random sampling 

    Heldring, Alexander; Úbeda Farré, Eduard; Rius Casals, Juan Manuel (2020-07-27)
    Article
    Open Access
    The accuracy of the Adaptive Cross Approximation (ACA) algorithm, a popular method for the compression of low rank matrix blocks in Method of Moment computations, is sometimes seriously compromised by unpredictable errors ...
  • Hybrid massive MIMO for urban V2I: Sub-6 GHz vs mmWave performance assessment 

    Pfadler, Andreas; Ballesteros Sánchez, Christian; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2020-03)
    Article
    Open Access
    The relevance of vehicle communications in next-generation networks entails the necessity of studying their performance in the framework of upcoming massive architectures. In this regard, a study of the wireless channel ...
  • Nested fast adaptive cross approximation algorithm for solving electromagnetic scattering problems 

    Fang, Xiaoxing; Heldring, Alexander; Rius Casals, Juan Manuel; Chen, Xinlei; Cao, Qunsheng (IEEE Microwave Theory and Techniques Society, 2020-09-28)
    Article
    Open Access
    In this paper, a Nested Fast Adaptive Cross Approximation (NFACA) algorithm is presented to accelerate the solution of electromagnetic scattering problems. It is based on the Fast Adaptive Cross Approximation (FACA) and ...
  • Wireless sensing of concrete setting process 

    González López, Giselle; Romeu Robert, Jordi; Cairó, Ignasi; Segura Pérez, Ignacio; Ikumi Montserrat, Tai; Jofre Roca, Lluís (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
    Article
    Open Access
    An RFID-based wireless system to measure the evolution of the setting process of cement-based materials is presented in this paper. The system consists of a wireless RFID temperature sensor that works embedded in concrete, ...
  • Terahertz frequency-scaled differential imaging for Sub-6 GHz vehicular antenna signature analysis 

    Solano-Sanchez, Jose-Antonio; Martinez-Ingles, Maria-Teresa; Molina García-Pardo, José María; Romeu Robert, Jordi; Jofre Roca, Lluís; Ballesteros Sánchez, Christian; Rodriguez, Jose-Victor; Mateo-Aroca, Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-02)
    Article
    Open Access
    The next generation of connected and autonomous vehicles will be equipped with high numbers of antennas operating in a wide frequency range for communications and environment sensing. The study of 3D spatial angular responses ...
  • 3D-printed UHF-RFID tag for embedded applications 

    Vidal, Neus; Lopez-Villegas, Josep Maria; Romeu Robert, Jordi; Salas Barenys, Arnau; Garcia-Miquel, Aleix; González López, Giselle; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-10)
    Article
    Open Access
    This paper presents the design, manufacture and characterization of a novel 3D passive UHF-RFID tag for embedded applications. The prototype is fabricated using additive manufacturing techniques: 3D printing and copper ...
  • Three-Dimensional beamsteering low complexity reconfigurable multilevel antenna 

    Zhou, Ivan; Ramírez Arroyave, Germán Augusto; Montero Bayo, Luca; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís (2020-04)
    Article
    Open Access
    A low-complexity reconfigurable antenna (RA) capable of steering its beam into nine different directions corresponding to ¿={-42°,0°,42°} in the ¿={25°,0°,155°} planes, and ¿=±25° in the ¿=90° plane, using a reduced number ...

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