Ara es mostren els items 1-20 de 53

    • A cmos-mems beol 2-axis lorentz-force magnetometer with device-level offset cancellation 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2020-10-19)
      Article
      Accés obert
      Lorentz-force Microelectromechanical Systems (MEMS) magnetometers have been proposed as a replacement for magnetometers currently used in consumer electronics market. Being MEMS devices, they can be manufactured in the ...
    • A comprehensive high-level model for CMOS-MEMS resonators 

      Banerji, Saoni; Fernández, Daniel; Madrenas Boadas, Jordi (2018-01-24)
      Article
      Accés obert
      This paper presents a behavioral modeling technique for CMOS microelectromechanical systems (MEMS) microresonators that enables simulation of an MEMS resonator model in Analog Hardware Description Language format within a ...
    • A fully analog CMOS implementation of a two-variable spiking neuron in the subthreshold region and its network operation 

      Moriya, Satoshi; Yamamoto, Hideaki; Sato, Shigeo; Yuminaka, Yasushi; Horio, Yoshihiko; Madrenas Boadas, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Edge computing requires the processing of real-time and personalized information with low power consumption. Neuromorphic devices are promising candidates for applications related to edge computing. Rate neurons, which are ...
    • A mixed-signal control system for Lorentz-force resonant MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández, Daniel; Madrenas Boadas, Jordi (2019-09-01)
      Article
      Accés obert
      This paper presents a mixed-signal closed-loop control system for Lorentz force resonant MEMS magnetometers. The control system contributes to 1) the automatic phase control of the loop, that allows start-up and keeps ...
    • A self-test and dynamics characterization circuit for MEMS electrostatic actuators 

      Fernández Martínez, Daniel; Madrenas Boadas, Jordi; Cosp Vilella, Jordi (2011-03)
      Article
      Accés restringit per política de l'editorial
      This paper presents a high-bandwidth capacitance estimation and driving circuit especially tailored for its use with MEMS electrostatic actuators. The circuit can be integrated as a part of a system comprising an electrostatic ...
    • A test setup for the characterization of Lorentz-force MEMS magnetometers 

      Sánchez Chiva, José María; Valle Fraga, Juan José; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2021-09-13)
      Article
      Accés obert
      Lorentz-force MEMS magnetometers are interesting candidates for the replacement of magnetometers in consumer electronics products. Plenty of works in the literature propose MEMS magnetometers, their readout circuits and ...
    • A translinear, log-domain FPAA on standard CMOS technology 

      Fernández, Daniel; Martínez Alvarado, Luis Arturo; Madrenas Boadas, Jordi (2012-02)
      Article
      Accés restringit per política de l'editorial
      A field-programmable analog array (FPAA) using a standard-CMOS wide-dynamic-range translinear element (TE) is introduced. The FPAA configurable analog blocks (CABs) are based on a reconfigurable translinear cell (RTC), ...
    • Action potential propagation: ion current or intramembrane electric field? 

      Martí Edo, Albert; Pérez González, Juan Jesús; Madrenas Boadas, Jordi (2018-01-22)
      Article
      Accés obert
      The established action potential propagation mechanisms do not satisfactorily explain propagation on myelinated axons given the current knowledge of biological channels and membranes. The flow across ion channels presents ...
    • AER-SRT: scalable spike distribution by means of synchronous serial ring topology address event representation 

      Dorta Pérez, Silvestre Taho; Zapata Rodríguez, Mireya; Madrenas Boadas, Jordi; Sánchez Rivera, Giovanny (2016-01-01)
      Article
      Accés obert
      Given the massive number of interconnects in Spiking Neural Networks (SNNs), distributing spikes effciently becomes a critical issue for the efficient hardware emulation of large-scale SNNs. In this work, the AER-SRT ...
    • An asynchronous finite-state-machine-based buck-boost converter for on-chip adaptive power supply 

      Fernández, Daniel; Madrenas Boadas, Jordi; Alarcón Cot, Eduardo José (2013-01)
      Article
      Accés restringit per política de l'editorial
      In this paper we present an asynchronous finite-state machine digital controller co-integrated with an on-chip non-inverting buck-boost power converter with dynamic signal-tracking capabilities. The mostly-digital controller ...
    • Analog VLSI implementation of kernel-based classifiers 

      Verleysen, Michel; Thissen, P.; Madrenas Boadas, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1994)
      Text en actes de congrés
      Accés obert
      Kernel-based classifiers are neural networks (radial basis functions) where the probability densities of each class of data are first estimated, to be used thereafter to approximate Bayes boundaries between classes. Such ...
    • Bioinspired sensory integration for environment-perception embedded systems 

      Madrenas Boadas, Jordi; Fernández Martínez, Daniel; Cosp Vilella, Jordi; Moreno Aróstegui, Juan Manuel; Martínez Alvarado, Luis Arturo; Sánchez Rivera, Giovanny (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, the architecture of a system intended for bioinspired environment perception is described. Considering the technology trends and applications requirements, the properties of such a system are discussed. ...
    • Characterization of CMOS-MEMS resonant pressure sensors 

      Banerji, Saoni; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2017-08-30)
      Article
      Accés obert
      IEEE Comprehensive characterization results of a CMOS-MEMS resonant pressure sensor are presented. We have extensively evaluated the key performance parameters of our device in terms of quality factor (Q) variations under ...
    • Circuits i dispositius electrònics : fonaments d'electrònica 

      Prat Viñas, Lluís; Bragós Bardia, Ramon; Chávez Domínguez, Juan Antonio; Fernández Chimeno, Mireya; Jiménez Serres, Vicente; Madrenas Boadas, Jordi; Navarro González, Eduardo; Salazar Soler, Jorge (Edicions UPC, 1998)
      Llibre
      Accés obert
      L'obra ha estat concebuda de forma autocontinguda, de manera que la pugui seguir qualsevol lector que no tingui més coneixements previs que els que hagi adquirit durant l'etapa preuniversitària. La primera part del llibre ...
    • Closed-form equation for natural frequencies of beams under full range of axial loads modeled with a spring-mass system 

      Valle Fraga, Juan José; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (2019-04-01)
      Article
      Accés obert
      A new simple closed-form equation that accurately predicts the effect of an arbitrarily large constant axial load, residual stress or temperature shift on the natural frequencies of an uniform single-span beam, with various ...
    • CMOS BEOL-embedded z-axis accelerometer 

      Michalik, Piotr Jozef; Sánchez Chiva, José María; Fernández Martínez, Daniel; Madrenas Boadas, Jordi (Institution of Electrical Engineers, 2015-05-28)
      Article
      Accés obert
      A first reported complementary metal-oxide semiconductor (CMOS)-integrated acceleration sensor obtained through isotropic inter-metal dielectric (IMD) etching of a back-end-of-line (BEOL) integrated circuit interconnection ...
    • CMOS wireless hybrid transceiver powered by integrated photodiodes for ultra-low-power IoT applications 

      Nikseresht, Sasan; Fernández, Daniel; Cosp Vilella, Jordi; Selin Lorenzo, Irina; Madrenas Boadas, Jordi (2023-12-20)
      Article
      Accés obert
      In this article, a communication platform for a self-powered integrated light energy harvester based on a wireless hybrid transceiver is proposed. It consists of an optical receiver and a reconfigurable radio frequency ...
    • CMOS-MEMS resonant pressure sensors: optimization and validation through comparative analysis 

      Banerji, Saoni; Michalik, Piotr Jozef; Méndez Fernández, Daniel; Madrenas Boadas, Jordi; Mola, Albert; Montanyà, Josep (2017-09-01)
      Article
      Accés obert
      An optimized CMOS-MEMS resonant pressure sensor with enhanced sensitivity at atmospheric pressure has been reported in this paper. The presented work reports modeling and characterization of a resonant pressure sensor, ...
    • Complexity reduction of neural network model for local motion detection in motion stereo vision 

      Akima, Hisanao; Kawakami, S.; Madrenas Boadas, Jordi; Moriya, S.; Yano, Masafumi; Nakajima, Koji; Sakuraba, Masao; Sato, Shigeo (Springer, 2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Spatial perception, in which objects’ motion and positional relationship are recognized, is necessary for applications such as a walking robot and an autonomous car. One of the demanding features of spatial perception in ...
    • Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier 

      Alarcón Cot, Eduardo José; Fernández, Diego; García Tormo, Albert; Madrenas Boadas, Jordi; Poveda López, Alberto (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A mixed-signal continuous-time-processing standard CMOS implementation of an asynchronous sigma-delta modulator aimed to drive a switching amplifier operating as an on-chip wideband adaptive power supply is presented in ...