Recent Submissions

  • A novel general-purpose theorem for the analysis of linear circuits 

    Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
    Article
    Open Access
    A novel general-purpose theorem for the analysis of linear circuits is stated and proven in this brief. When applying the proposed theorem, any current (voltage) of interest is determined by finding first an equivalent ...
  • A closed-loop capacitance-to-frequency converter for single-element and differential capacitive sensors 

    Areekath, Lakshmi; George, Boby; Reverter Cubarsí, Ferran (2020-11-01)
    Article
    Restricted access - publisher's policy
    A novel closed-loop switched-capacitor(SC) capacitance-to-frequency converter (CFC) is presentedin this paper. The proposed CFC is capable of measuring from either a single-element or a differential capacitive sensor, ...
  • LED-Based Wake-Up circuit for microcontrollers 

    Ripoll Vercellone, Edgar; Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (2020-07-15)
    Article
    Open Access
    This article proposes, analyzes, and tests a wake-up circuit for a microcontroller (MCU) that uses a light-emitting diode (LED), operating as a photodetector, illuminated by a smartphone flashlight. The wake-up circuit ...
  • Demodulating AM square signals via a digital timer for sensor applications 

    Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (2020-05-01)
    Article
    Restricted access - publisher's policy
    This paper evaluates theoretically and experimentally the performance of a timer-based demodulator applied to low-frequency amplitude-modulated (AM) square signals coming from sensor circuits. The demodulator extracts the ...
  • Toward non-CPU activity in low-power MCU-Based measurement systems 

    Reverter Cubarsí, Ferran (2020-01-01)
    Article
    Open Access
    This article evaluates the benefits of having peripheral-triggered peripherals in a microcontroller unit (MCU) intended for low-power sensor applications. In such an architecture, the functionality is moved from the central ...
  • 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 ...
  • Thermal phase lag heterodyne infrared imaging for current tracking in radio frequency integrated circuits 

    Perpiñà Gilabet, Xavier; León, Javier; Altet Sanahujes, Josep; Vellvehi, Miquel; Reverter Cubarsí, Ferran; Barajas Ojeda, Enrique; Jordà, Xavier (2017-02-27)
    Article
    Open Access
    With thermal phase lag measurements, current paths are tracked in a Class A radio frequency (RF) power amplifier at 2 GHz. The amplifier is heterodynally driven at 440 MHz and 2 GHz, and its resulting thermal field was ...
  • Optimal inductor current in boost DC/DC converters operating in burst mode under light-load conditions 

    Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (2016-01-01)
    Article
    Open Access
    This letter analyzes how the efficiency of boost dc/dc converters operating in burst mode under light-load conditions can be improved by an appropriate selection of the inductor current that transfers energy from the input ...
  • MOSFET dynamic thermal sensor for IC testing applications 

    Reverter Cubarsí, Ferran; Perpiñà Gilabet, Xavier; Barajas Ojeda, Enrique; León, Javier; Vellvehi, Miquel; Jordà, Xavier; Altet Sanahujes, Josep (2016-05-01)
    Article
    Open Access
    This paper analyses how a single metal-oxide-semiconductor field-effect transistor (MOSFET) can be employed as a thermal sensor to measure on-chip dynamic thermal signals caused by a power-dissipating circuit under test ...
  • Criterios para practicas de evaluación de calidad 

    Cadenato, Ana; Martínez Martínez, María del Rosario; Gallego Fernández, María Isabel; Amante García, Beatriz; Jordana Barnils, José; Farrerons Vidal, Óscar; Isalgué Buxeda, Antonio; Fabregat Fillet, Jaume (2012-07-31)
    Article
    Open Access
    El grupo de innovación GRAPA ( GRupo de la Evaluación de la Práctica Académica ) d el proyecto RIMA de la Universitat Politècnica de Catalunya ha elaborado una serie de criterios , en forma de rúbrica, como buenas prácticas ...
  • 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 ...
  • Occupancy and belt detection in removable vehicle seats via inductive power transmission 

    Albesa Querol, Joan Miquel; Gasulla Forner, Manuel (2015-08)
    Article
    Open Access

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