Now showing items 1-20 of 40

    • A Closed-loop capacitance to pulse-width converter for single element capacitive sensors 

      Areekath, Lakshmi; George, Boby; Reverter Cubarsí, Ferran (2019)
      Conference report
      Open Access
      A novel closed-loop capacitance-to-pulse width converter (CPC) suitable for single element capacitive sensors that use sinusoidal excitation is presented in this paper. Its operation is realized using a new configuration ...
    • A compact Thévenin model for a rectenna and its application to an RF harvester with MPPT 

      Gasulla Forner, Manuel; Ripoll Vercellone, Edgar; Reverter Cubarsí, Ferran (Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-06)
      Article
      Open Access
      This paper proposes a compact Thévenin model for a rectenna. This model is then applied to design a high-efficiency radio frequency harvester with a maximum power point tracker (MPPT). The rectenna under study consists of ...
    • 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 ...
    • An Extended study on an interference-insensitive switched capacitor CDC 

      Areekath, Lakshmi; Reverter Cubarsí, Ferran; George, Boby (2019-09-15)
      Article
      Restricted access - publisher's policy
      A new Switched Capacitor (SC) Capacitance-to-Digital Converter (CDC) is presented in this paper. Its output exhibits a high-level of insensitivity to interference, by virtue of the conversion mechanism itself. The proposed ...
    • 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 ...
    • Characterization of MOSFET temperature sensors for on-chip dynamic thermal measurements 

      Reverter Cubarsí, Ferran; Perpinyà, Xavier; Leon, Javier; Vellvehi, Miquel; Jordà, Xavier; Altet Sanahujes, Josep (2015)
      Conference lecture
      Open Access
    • 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 ...
    • Design considerations for a CMOS Lab-on-Chip microheater array to facilitate the in vitro thermal stimulation of neurons 

      Reverter Cubarsí, Ferran; Prodromakis, Themis; Liu, Yan; Georgiou, Pantelis; Nikolic, Konstantin; Constandinou, Tim (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      This paper identifies and addresses key design considerations and trade-offs in the implementation of a CMOS high-resolution microheater array for Lab-on-Chip (LOC) applications. Specifically, this is investigated in the ...
    • Differential inductive sensor-to-microcontroller interface circuit 

      Kokolanski, Zivko; Gasulla Forner, Manuel; Reverter Cubarsí, Ferran (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      This paper proposes a low-cost interface circuit for differential inductive sensors where the sensor is directly connected to a microcontroller unit (MCU) without any active intermediate electronics in between. The timer ...
    • 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 ...
    • 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 ...
    • Electro-thermal characterization of a differential temperature sensor in a 65 nm CMOS IC: Applications to gain monitoring in RF amplifiers 

      Altet Sanahujes, Josep; González, José Luis; Gómez Salinas, Dídac; Perpiñà Gilabet, Xavier; Claeys, Wilfrid; Grauby, Stéphane; Dufis, Cédric Yvan; Vellvehi, Miquel; Mateo Peña, Diego; Reverter Cubarsí, Ferran; Dilhaire, Stefan; Jordà, Xavier (2014-05)
      Article
      Restricted access - publisher's policy
      This paper reports on the design solutions and the different measurements we have done in order to characterize the thermal coupling and the performance of differential temperature sensors embedded in an integrated circuit ...
    • 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 

      Reverter Cubarsí, Ferran (Universitat Politècnica de Catalunya, 2018-06-01)
      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
    • Examen MQ 

      Reverter Cubarsí, Ferran (Universitat Politècnica de Catalunya, 2018-04-03)
      Exam
      Restricted access to the UPC academic community
    • Experimental characterization of off-the-shelf LEDs as photodetectors for waking up microcontrollers 

      Ripoll Vercellone, Edgar; Reverter Cubarsí, Ferran; Ferrandiz, Vicent; Gasulla Forner, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      The use of LEDs as photodetectors has been subject of study for a long time. However, LEDs manufacturers do not provide information about the response of LEDs to the light. It is essential for the designers of electronic ...
    • Experimental characterization of the energy consumption of ADC embedded into microcontrollers operating in low power 

      Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      This work aims to experimentally characterize the energy consumption of analog-to-digital converters (ADC) embedded into microcontroller units (MCU) operating in low power for autonomous sensor applications. The study ...
    • Improving the efficiency of PV low-power processing circuits by selecting an optimal inductor current of the DC/DC converter 

      Reverter Cubarsí, Ferran; Gasulla Forner, Manuel (2014)
      Other
      Open Access
      In the context of autonomous sensors powered by small-size photovoltaic (PV) panels, this work analyses how the efficiency of DC/DC-converter-based power processing circuits can be improved by an appropriate selection of ...
    • Improving the resolution in direct inductive sensor-to-microcontroller interface 

      Kokolanski, Zivko; Reverter Cubarsí, Ferran; Gavrovski, Cvetan; Dimcev, Vladimir (2015)
      Conference report
      Open Access