Exploració per autor "Nunes Cavalheiro, David Manuel"Més informació

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    • A battery-less, self-sustaining RF energy harvesting circuit with TFETs for µW power applications 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés obert
      This paper proposes a Tunnel FET (TFET) power management circuit for RF energy harvesting applications. In contrast with conventional MOSFET technologies, the improved electrical characteristics of TFETs promise a better ...

    • Insights into tunnel FET-based charge pumps and rectifiers for energy harvesting applications 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (2017-03-01)
      Article
      Accés obert
      In this paper, the electrical characteristics of tunnel field-effect transistor (TFET) devices are explored for energy harvesting front-end circuits with ultralow power consumption. Compared with conventional thermionic ...

    • Novel charge pump converter with Tunnel FET devices for ultra-low power energy harvesting sources 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Comunicació de congrés
      Accés obert
      Compared to conventional technologies, the superior electrical characteristics of III-V Tunnel FET (TFET) devices can highly improve the process of energy harvesting conversion at ultra-low input voltage operation ...

    • Novel UHF passive rectifier with tunnel FET devices 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      The increase of the losses in UHF passive rectifiers with Tunnel FET devices at large RF AC amplitudes are mainly due to the high reverse current inherent of this technology when subjected to high reverse bias conditions. ...

    • Pespectives of TFET devices in ultra-low power charge pumps for thermo-electric energy sources 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The superior electrical characteristics of the heterojunction III-V Tunnel FET (TFET) devices can outperform current technologies in the process of energy harvesting conversion at ultra-low power supply voltage operation ...

    • TFET-Based power management circuit for RF energy harvesting 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (2016-11-14)
      Article
      Accés obert
      This paper proposes a Tunnel FET (TFET)-based power management circuit (PMC) for ultra-low power RF energy harvesting applications. In contrast with conventional thermionic devices, the band-to-band tunneling mechanism of ...

    • Tunnel FET device characteristics for RF energy harvesting passive rectifiers 

      Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja (2015-06)
      Comunicació de congrés
      Accés obert
      The lack of high power conversion efficiency in RF passive rectifier circuits at sub-µW power levels with current MOSFET technologies is directly related with the difficulty of the transistors in conducting the required ...