Browsing by Author "Palà Schönwälder, Pere"Més informacióMés informació

Now showing items 1-20 of 44

    • A BPSK superregenerative receiver. Preliminary results 

      Palà Schönwälder, Pere; Moncunill Geniz, Francesc Xavier; Bonet Dalmau, Jordi; Águila López, Francisco del; Giralt Mas, Ma. Rosa (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-05)
      Conference report
      Open Access
      This paper describes a bit-synchronous superregenerative receiver suitable for BPSK demodulation. The output of the superregenerative oscillator (SRO), which reproduces the phase information of the input signal, is ...

    • A direct-sequence spread-spectrum super-regenerative receiver 

      Moncunill Geniz, Francesc Xavier; Mas Casals, Orestes Miquel; Palà Schönwälder, Pere (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Conference lecture
      Open Access
      Current applications of the super-regenerative receiver use narrowband modulations. In this paper a new architecture that allows incoherent detection of spread-spectrum signals is presented. A pseudorandom code generator ...

    • 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 ...

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

      Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Miró Sans, Joan Maria (Institute of Electrical and Electronics Engineers (IEEE), 1998)
      Conference report
      Open Access
      We present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic nonlinear elements. With the discretization of the equations that describe the circuit in ...

    • A discrete-time equivalent system approach to the periodic response of nonlinear autonomous circuits 

      Palà Schönwälder, Pere; Miró Sans, Joan Maria (1994)
      Conference report
      Open Access
      The problem of computing the steady state response of nonlinear autonomous circuits is solved making use of a discrete-time equivalent system approach. With the application of an s-plane to z-plane mapping, the circuit ...

    • 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 ...

    • A high-resolution UWB IR superregenerative receiver front end with an SRD quench shaper 

      Moncunill Geniz, Francesc Xavier; Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Águila López, Francisco del; Giralt Mas, Ma. Rosa (2012-02-03)
      Article
      Restricted access - publisher's policy
      We present a simple receiver front end that makes use of the baseband superregeneration principle to detect ultrawideband (UWB) impulse radio signals. The UWB antenna is directly connected to the core circuit consisting ...

    • A low in-band radiation superregenerative oscillator 

      Palà Schönwälder, Pere; Bonet Dalmau, Jordi; Moncunill Geniz, Francesc Xavier; Águila López, Francisco del; Giralt Mas, Ma. Rosa (2013-05-27)
      Article
      Open Access
      This brief describes a superregenerative (SR) voltage-controlled oscillator as a building block for SR receivers where most of the oscillator spectrum components are outside the reception frequency band. This allows ...

    • An explicit method for modeling lossy and dispersive transmission lines 

      Palà Schönwälder, Pere; Miró Sans, Joan Maria (Microwave Exhibitions and Publishers, 1993)
      Conference report
      Open Access
      In this paper, an explicit -non iterative- method for modeling lossy and dispersive transmission lines, allowing the inclusion of skin-effect parameters is described. This method, based on multipoint Padé approximation, ...

    • 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 ...

    • Análisis de circuitos autónomos no lineales con parámetros distribuidos mediante técnicas temporales discretas 

      Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Miró Sans, Joan Maria (1997)
      Conference report
      Open Access

    • Análisis y Optimización de Circuitos Autónomos Mediante Técnicas Temporales Discretas 

      Palà Schönwälder, Pere (Universitat Politècnica de Catalunya, 1994-07-12)
      Doctoral thesis
      Open Access
      En esta tesis, las ecuaciones de equilibrio de circuitos no lineales autónomos se plantean discretizando el circuito mediante transformaciones de plano S a plano Z.<br/><br/>Tras imponer la periodicidad de las variables ...

    • CiOpt: a program for optimization of the frequency response of linear circuits 

      Miró Sans, Joan Maria; Palà Schönwälder, Pere (IEEE Computer Society, 1991)
      Conference report
      Open Access
      An interactive personal-computer program for optimizing the frequency response of linear lumped circuits (CiOpt) is presented. CiOpt has proved to be an efficient tool in improving designs where the inclusion of more ...

    • Class-talk: una guia de conversa per fer classes en una altra llengua 

      Alsina, Montserrat; Giralt Mas, Ma. Rosa; Bonet Dalmau, Jordi; Fortuny Santos, Jordi; Palà Schönwälder, Pere (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2012-07-06)
      Conference report
      Open Access
      Una de les característiques de l’Espai Europeu d’Educació Superior és la mobilitat de l’estudiantat i el professorat, entre diferents universitats i països, i la impartició d’assignatures en una llengua estrangera (AICLE), ...

    • Design and performance comparison of a superregenerative MPSK transceiver 

      Bonet Dalmau, Jordi; López Riera, Alexis; Palà Schönwälder, Pere; Moncunill Geniz, Francesc Xavier; Babí Oller, Albert (2015)
      Conference lecture
      Open Access
      In this paper we present a superregenerative transceiver able to switch among BPSK, QPSK and 8PSK modulations. An HF-band proof-of-concept transceiver is implemented on an FPGA with a minimum of analog circuitry. The ...

    • Eines de la web 2.0 per a la coordinació d'assignatures i el treball en equip 

      Bonet Dalmau, Jordi; Águila López, Francisco del; Escobet Canal, Teresa; Giménez Pradales, José Miguel; Giralt Mas, Ma. Rosa; Palà Schönwälder, Pere; Sanahuja Moliner, Ricard; Vila Marta, Sebastià (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
      Conference report / Conference lecture
      Open Access
      Aquest projecte té per objectiu millorar l'eficiència en l'aprenentatge introduint la web 2.0 com a eina quotidiana de coordinació del PDI i de treball en equip de l'alumnat. La part més important del projecte consisteix ...

    • Eines de la web 2.0 per a la coordinació d'assignatures: resultats preliminars 

      Giralt Mas, Ma. Rosa; Bonet Dalmau, Jordi; Vila Marta, Sebastià; Palà Schönwälder, Pere; Águila López, Francisco del (2012)
      Conference lecture
      Open Access
      Aquesta comunicació presenta els resultats d'utilització d'un Dipòsit de Material Docent amb les característiques pròpies de l'Open Course Ware, en el primer quadrimestre del nou grau en Enginyeria de Sistemes TIC que ...

    • ENGINYERIA DE SISTEMES 

      Palà Schönwälder, Pere (Universitat Politècnica de Catalunya, 2022-01-23)
      Exam
      Restricted access - author's decision

    • ENGINYERIA DE SISTEMES 

      Palà Schönwälder, Pere (Universitat Politècnica de Catalunya, 2021-06-26)
      Exam
      Restricted access - author's decision

    • Gestión de proyectos TIC: modelo de formación para PYMES 

      Giralt Mas, Ma. Rosa; Companys Pascual, Ramón; Palà Schönwälder, Pere (Asociación Española de Ingeniería de Proyectos, 2010)
      Conference lecture
      Open Access
      La realización de proyectos en empresas es una de sus actividades fundamentales, aunque la clave de su éxito es una buena gestión. Al constatar que algunas pymes no acostumbraban a llevar a cabo una correcta gestión de ...