Now showing items 1-20 of 40

  • A contactless capacitive angular-position sensor 

    Gasulla Forner, Manuel; Li, Xiujun; Meijer, Gerard C. M.; Van der Ham, Lucas; Spronck, Jo W. (Institute of Electrical and Electronics Engineers, 2003-10)
    Article
    Open Access
    This paper presents an absolute capacitive angular-position sensor with a contactless rotor. The sensor is mainly composed of three parts: the capacitive sensing element, a signal processor, and a microcontroller. The ...
  • A high-efficiency matching technique for low power levels in RF harvesting 

    Anchustegui Echearte, Iker; Jimenez Lopez, David; Gasulla Forner, Manuel; Giuppi, Francesco; Georgiadis, Apostolos (The Electromagnetics Academy, 2013)
    Conference report
    Open Access
    Radiofrequency (RF) energy can be harvested in order to power autonomous sensors either from the surrounding environment or from dedicated sources. A conventional RF harvester is mainly composed by an antenna, a matching ...
  • A High-Efficiency RF Harvester with Maximum Power Point Tracking 

    Gasulla Forner, Manuel; Robert Sanxis, Francesc Josep; Jordana Barnils, José; Ripoll Vercellone, Edgar; Berenguer Sau, Jordi; Reverter Cubarsí, Ferran (Multidisciplinary Digital Publishing Institute (MDPI), 2018)
    Conference report
    Open Access
    This paper presents the implementation of a high-efficiency radiofrequency (RF) harvester, which consists of a rectenna and a maximum power point tracker (MPPT). The rectenna was characterized from -30 dBm to -10 dBm at ...
  • A high-speed capacitive-sensor interface using a relaxation oscillator and a fast counter 

    Gasulla Forner, Manuel; Li, Xiujun; Meijer, Gerard C. M. (Institute of Electrical and Electronics Engineers, 2003-05)
    Conference report
    Open Access
    This paper presents the analysis and experimental results on the jitter of a capacitive-sensor interface. The interface is implemented with a simple relaxation oscillator, a fast counter and a microcontroller. The goal ...
  • An Add-On Electronic Device to Upgrade Mechanical Gas Meters into Electronic Ones 

    Ripoll Vercellone, Edgar; Ferrandiz, Vicent; Gasulla Forner, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2018)
    Conference report
    Open Access
    Smart utilities enable more efficient energy consumption and distribution and are the key for smart homes development. We propose an electronic device that will be integrated as an add-on to already installed conventional ...
  • Análisis de una tecnología de carga de dispositivos inalámbricos. Informe técnico 

    Gasulla Forner, Manuel (2015-01-22)
    External research report
    Restricted access - confidentiality agreement
  • Analysis of the optimum gain of a high-pass l-matching network for rectennas 

    Gasulla Forner, Manuel; Jordana Barnils, José; Robert Sanxis, 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 ...
  • A new MPPT method for low-power solar energy harvesting 

    López Lapeña, Oscar; Penella López, María Teresa; Gasulla Forner, Manuel (2010-09)
    Article
    Open Access
    This paper describes a new maximum-power-pointtracking (MPPT) method focused on low-power (< 1 W) photovoltaic (PV) panels. The static and dynamic performance is theoretically analyzed, and design criteria are provided. ...
  • A review of commercial energy harvesters for autonomous sensors 

    Penella López, María Teresa; Gasulla Forner, Manuel (2007-05-01)
    Conference report
    Open Access
    Current commercial autonomous sensors are mainly powered by primary batteries. Batteries need to be replaced and hence can become the largest and most expensive part of the system. On the other hand, our environment is ...
  • A simple and efficient MPPT method for low-power PV cells 

    Penella López, María Teresa; Gasulla Forner, Manuel (2014-01-01)
    Article
    Open Access
    Small-size PV cells have been used to power sensor nodes. These devices present limited computing resources and so low complexity methods have been used in order to extract the maximum power from the PV cells. Among them, ...
  • A ZigBee wireless sensor network compliant with the IEEE1451 standard 

    Higuera Portilla, Jorge Eduardo; Polo Cantero, José; Gasulla Forner, Manuel (2009)
    Conference report
    Open Access
    Wireless sensor networks are becoming very attractive for monitoring and control applications with smart sensor nodes. We present an implementation of a ZigBee wireless sensor network compliant with the IEEE1451 standard ...
  • Buck converter for low-power PV modules: A Comparative Study 

    Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2018)
    Conference report
    Open Access
    Autonomous sensors that harvest energy from the environment usually employ a dc/dc converter to regulate the operating voltage of the energy transducer around its maximum power point (MPP). In this context, this work ...
  • Direct inductive sensor-to-microcontroller interface circuit 

    Kokolanski, Zivko; Jordana Barnils, José; Gasulla Forner, Manuel; Dimcev, Vladimir; Reverter Cubarsí, Ferran (2015-04-01)
    Article
    Open Access
    This paper proposes and analyses a microcontroller-based interface circuit for inductive sensors with a variable self-inductance. Besides the microcontroller (mu C) and the sensor, the circuit just requires an external ...
  • Direct interface for capacitive sensors based on the charge transfer method 

    Gaitán Pitre, Jorge Eliécer; Gasulla Forner, Manuel; Pallàs Areny, Ramon (2007-05-01)
    Conference report
    Open Access
    We present the theoretical analysis and experimental performance results of a direct interface for capacitive sensors based on the charge transfer method when parasitic capacitances are included. The interface circuit ...
  • Efficiency Optimization in Burst-Mode Buck DC/DC Converters for Sensor Nodes 

    Reverter Cubarsí, Ferran; Glaser, Chris; Gasulla Forner, Manuel (2018-07-08)
    Article
    Open Access
    In autonomous sensor nodes, switching dc/dc converters are usually employed to power the sensor electronics and also to maintain the operating voltage of an energy transducer around its maximum power point. In such a ...
  • EVEA: espai virtual d'electrònica analògica 

    Cuadras Tomàs, Àngel; Hornero Ocaña, Gemma; Serrano Finetti, Roberto Ernesto; Gasulla Forner, Manuel (2006-02)
    Conference report
    Open Access
    El projecte Espai Virtual d’Electrònica Analògica (EVEA) constitueix un entorn virtual, accessible des d’internet, que integra els continguts d’electrònica analògica presents en diferents assignatures de la titulació ...
  • Examen final 

    Gasulla Forner, Manuel; Jordana Barnils, José; Polo Cantero, José; Reverter Cubarsí, Ferran (Universitat Politècnica de Catalunya, 2019-01-11)
    Exam
    Restricted access to the UPC academic community
  • Examen final 

    Gasulla Forner, Manuel; Jordana Barnils, José (Universitat Politècnica de Catalunya, 2018-06-18)
    Exam
    Restricted access to the UPC academic community
  • Examen MQ 

    Gasulla Forner, Manuel; Jordana Barnils, José (Universitat Politècnica de Catalunya, 2018-04-13)
    Exam
    Restricted access to the UPC academic community
  • Examen MQ 

    Gasulla Forner, Manuel; Jordana Barnils, José; Polo Cantero, José; Reverter Cubarsí, Ferran (Universitat Politècnica de Catalunya, 2018-10-30)
    Exam
    Restricted access to the UPC academic community