Articles de revista

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  • Superregeneration revisited: from principles to current applications 

    Palà Schönwälder, Pere; Bonet Dalmau, Jordi; Águila López, Francisco del; Moncunill Geniz, Francesc Xavier; Giralt Mas, Ma. Rosa (2020-02-01)
    Article
    Open Access
    Wireless communications play a central role in our modern connected lives; at the same time, they constitute a very broad and deep area of research. The elements that make wireless communications possible are a transmitter, ...

  • An interdisciplinary approach to motivate students to learn digital systems and computing engineering 

    Tarres Puertas, Marta Isabel; López Riera, Alexis; Palà Schönwälder, Pere; Vila Marta, Sebastià (Tempus Publications, 2019-03-01)
    Article
    Restricted access - publisher's policy
    We report a new learning approach in collaborative learning-by doing, real-world team-based project in two ICT courses: DigitalSystems and Computing Engineering, conducted at Universitat Polite`cnica de Catalunya. Data ...

  • Optimal batch scheduling of a multiproduct dairy process using a combined optimization/constraint programming approach 

    Escobet Canal, Teresa; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Palà Schönwälder, Pere; Romera Formiguera, Juli; Adelman, Winfried (Pergamon Press, 2019-03-08)
    Article
    Restricted access - publisher's policy
    This paper presents the optimal batch scheduling of a multi-product dairy process using an approach that combines optimization and constraint programming techniques. A suitable model describing the subprocesses and production ...

  • A discrete-time technique for the steady-state analysis of nonlinear class-E amplifiers 

    Águila López, Francisco del; Palà Schönwälder, Pere; Molina Gaudó, Pilar; Mediano Heredia, Arturo (Institute of Electrical and Electronics Engineers (IEEE), 2007-06-11)
    Article
    Open Access
    Switched circuits are widely used, particularly for power electronic applications in which efficiency is important. Of these applications, the class-E amplifier has been given particular attention, since it is theoretically ...

  • Joint symbol and chip synchronization for a burst-mode-communication superregenerative MSK receiver 

    López Riera, Alexis; Águila López, Francisco del; Palà Schönwälder, Pere; Bonet Dalmau, Jordi; Giralt Mas, Ma. Rosa; Moncunill Geniz, Francesc Xavier (2017-01-05)
    Article
    Open Access
    In this paper we describe a superregenerative (SR) MSK receiver able to operate in a burst-mode framework where synchronization is required for each packet. The receiver is based on an SR oscillator which provides samples ...

  • A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere (2000-02)
    Article
    Open Access
    We present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic non- linear elements. With the discretization of the equations that describe the circuit ...

  • Stability analysis of periodic solutions in non-linear autonomous circuits: a discrete time approach 

    Miró Sans, Joan Maria; Palà Schönwälder, Pere; Mas Casals, Orestes Miquel (1996-07)
    Article
    Restricted access - publisher's policy
    Steady-state methods have been devised to compute periodic wave-forms without having to integrate the autonomous circuit equations until the transients die out. Stability analysis of the computed solutions is the next ...

  • The Mendeleev-Meyer force project 

    Santos Hernández, Sergio; Lai, Chia-Yun; Amadei, Carlo Alberto; Gadelrab, Karim Raafat; Tang, Tzu-Chieh; Verdaguer Prats, Albert; Barcons Xixons, Víctor; Font Teixidó, Josep; Colchero, Jaimer; Chiesa, Matteo (2016-10-28)
    Article
    Open Access
    Here we present the Mendeleev–Meyer Force Project which aims at tabulating all materials and substances in a fashion similar to the periodic table. The goal is to group and tabulate substances using nanoscale force footprints ...

  • Circuitos de capacidades conmutadas. Análisis frecuencial por ordenador 

    Puerta Notario, Antonio; Miró Sans, Joan M.; Sanz Postils, Margarita (1985-10)
    Article
    Restricted access - publisher's policy
    El interés fundamental de los circuitos de condensadores conmutados radica en su aplicación a la realización de filtros monolíticos y de otros bloques funcionales para su tratamiento analógico de la señal. Resulta del ...

  • Formalism for a multiresolution time series database model 

    Llusà Serra, Aleix; Vila Marta, Sebastià; Escobet Canal, Teresa (2016-03)
    Article
    Open Access
    We formalise a specialised database management system model for time series using a multiresolution approach. These special purpose database systems store time series lossy compressed in a space-bounded storage. Time series ...

  • Single cycle and transient force measurements in dynamic atomic force microscopy 

    Gadelrab, Karim Raafat; Santos, Sergio; Font Teixidó, Josep; Chiesa, Matteo (2013-11-21)
    Article
    Open Access
    The monitoring of the deflection of a micro-cantilever, as the end of a sharp probe mounted at its end, i.e. the tip, interacts with a surface, forms the foundation of atomic force microscopy AFM. In a nutshell, developments ...

  • Establishing nanoscale heterogeneity with nanoscale force measurements 

    Chang, Yun-Hsiang, Yun-Hsiang; Olukan, Tuza; Lai, Chia-Yun; Santos, Sergio; Lin, Tze-Yu; Apostoleris, Harry; Font Teixidó, Josep; Barcons Xixons, Víctor; Chiesa, Matteo (2015-08-13)
    Article
    Open Access
    Establishing the presence or absence of nanoscale compositional heterogeneity with nanoscale resolution is becoming instrumental for the development of many fields of science. Force versus distance measurements and parameters ...

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