Now showing items 1-20 of 155

    • A 56-GHz LC-Tank VCO With 17% tuning range in 65-nm bulk CMOS for wireless HDMI 

      González Jiménez, José Luis; Badets, Franck; Martineau, Baudouin; Belot, Didier (2010-03-25)
      Article
      Open Access
      A voltage-controlled oscillator (VCO) with a central frequency of 56 GHz and a 17% tuning range is presented. The oscillation frequency is tuned both by an analog input and by a 3-bit digital control bus using the same ...
    • A comparison between grounded and floating shield inductors for mmW VCOs 

      González Jiménez, José Luis; Aragonès Cervera, Xavier; Molina Garcia, Marc Manel; Martineau, Baudouin; Belot, Didier (2010)
      Conference report
      Open Access
      A floating-shield inductor implemented in CMOS process is compared with a conventional patterned ground shield inductor for the implementation of a LC voltage controlled oscillator (VCO) operating at mmW frequencies. ...
    • A large signal nonlinear MODFET model from small signal S-parameters 

      O'Callaghan Castellà, Juan Manuel; Beyer, James B. (Institute of Electrical and Electronics Engineers (IEEE), 1989)
      Conference report
      Open Access
      A general technique for predicting the MODFET large signal performance has been developed. The technique is based entirely on experimental data (small signal S-parameters at different biased points) and therefore is ...
    • A new and fast index for the quantification of short range self-similarity in RR time series 

      García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (2010)
      Conference lecture
      Open Access
      We propose a new and very fast index (the frequency of sign changes of the mirrored differences or fscmd) with good correlation with the short range scaling exponent (  R) estimated among scales 4 to 16 of the DFA. ...
    • A proportional controller based on clustering theory: an academic example of a machine learning discipline 

      Acho Zuppa, Leonardo; Buenestado Caballero, Pablo (EDP Sciences, 2018)
      Conference report
      Open Access
      The main objective of this paper is to present a controller design based on the K-means clustering theory. The controller is realized in such way that when the plant output is located outside of the designed clustering ...
    • A Real time simulation model for Lognormal Fading channels 

      Delgado Penin, José Antonio; Serrat Fernández, Juan (1991)
      Conference report
      Open Access
      In this paper we present a mathematical model for the simulation of lognormal fading channels. A modeling technique and its validation by computer simulation are described with special emphasis on the aspects related to ...
    • A review of electronic engineering design free software tools 

      Medrano Sánchez, Carlos; Plaza García, Inmaculada; Castro Gil, Manuel Alonso; García Sevilla, Francisco; Martínez Calero, J.D.; Pou Félix, Josep; Corbalán Fuertes, Montserrat (2010)
      Conference report
      Restricted access - publisher's policy
      In this paper, we review electronic design free software tools. We have searched open source programs that help with several tasks of the electronic design flow: analog and digital simulation, schematic capture, printed ...
    • Accuracy considerations in surface impedance measurements 

      O'Callaghan Castellà, Juan Manuel; Sans, C; Pous Andrés, Rafael; Collado Gómez, Juan Carlos; Canet, E (1997-06)
      Article
      Open Access
      An approach is proposied for the design, measurement and data extraction of superconducting microstrip resonators used in determination of surface resistance and penetration depth. Major sources of error are analyzed and ...
    • Activation of different MEMS resonant modes with pulsed digital oscillators 

      Domínguez Pumar, Manuel; Blokhina, Elena; Pons Nin, Joan; Feely, Orla; Sanchez Rojas, Jose Luis (Springer Verlag, 2010)
      Conference report
      Open Access
      The objective of this work is to show that is possible to excite different vibration modes of MEMS resonators using Pulsed Digital Oscillators. This class of circuits exhibit two different behaviours: the oscillation and ...
    • Actividades del LCMM-UB 

      Marco Colás, Santiago (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
      Article
      Open Access
    • An Introduction to micro electro mechanical systems (MEMS) 

      Sáenz, Juan Pablo (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2005)
      Article
      Open Access
      The remarkable progress ofMEMS (Micro Electro Mechanical Systems) research has reached the stage where practical applications are intensely pursued. Based on highperformance systems cornmercial products have made ...
    • Analysis of GaAs-Ti thin films deposited by sputtering onto c-Si and GaAs 

      Silvestre Bergés, Santiago; Puigdollers i González, Joaquim; Boronat, A.; Castañer Muñoz, Luis María (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-02-11)
      Conference lecture
      Open Access
      Some sputtering processes of GaAs and Ti onto glass, c-Si and c-GaAs substrates have been carried out in order to obtain thin films as candidates to be intermediate band photovoltaic materials. This work presents first ...
    • Análisis y propuestas de mejora de la gestión de stocks en una empresa de agua embotellada 

      Camara Roldan, Sofia (Universitat Politècnica de Catalunya, 2017-09-13)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • Aplicaciones musicales del sistema operativo en tiempo real OSA RTOS utilizando la placa de desarrollo Open18F4520 

      Domènech Yeste, Pere (Universitat Politècnica de Catalunya, 2016-01-12)
      Master thesis (pre-Bologna period)
      Open Access
      Este proyecto final de carrera se enmarca en las disciplinas de la electrónica e informática, y con su realización se pretende conseguir una correcta migración de un código fuente escrito en lenguaje C para un microcontrolador ...
    • Application of selective leaching in fabrication of thin film ybco devices 

      James, Pm; O'Callaghan Castellà, Juan Manuel (1993-03)
      Article
      Open Access
      Ethylenediamine solutions have been shown to turn bulk YBCO into insulating materials. The effect of these solutions on thin YBCO films is studied. In both unpatterned and patterned films, a smooth decrease in critical ...
    • Applications of longitudinal and transversal bioimpedance measurements in peritoneal dialysis at 50 kHz 

      Nescolarde Selva, Lexa Digna; Doñate, T.; Casañas Bueno, Roberto; Rosell Ferrer, Francisco Javier (2010)
      Conference report
      Restricted access - publisher's policy
      More relevant information of the fluid changes in peritoneal dialysis (PD) might be obtained with segmental bioimpedance measurements rather than whole-body measurement, who hidden information of body composition. ...
    • Automatización y control de un motor a pasos para la sintonización de filtros de microondas 

      Benet Freissinier, Josep (Universitat Politècnica de Catalunya, 2010-12-15)
      Master thesis (pre-Bologna period)
      Open Access
      Català: L'objectiu del projecte és ajustar de forma automàtica la freqüència central de un ressonador de microones a la freqüència que desitgi l'usuari. Per aconseguir-ho, s'introdueix la freqüència desitjada al software ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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. ...
    • c-Si photovoltaic arrays 

      Bermejo Broto, Sandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis María (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Conference report
      Open Access
      Crystalline silicon small photovoltaic arrays are shown. Electrical isolation of individual cells and series connection between them to integrate series arrays are discussed. High open circuit voltage values in the range ...
    • Carga electrónica programable D.C. 

      Gutiérrez Díaz, Carlos (Universitat Politècnica de Catalunya, 2015-05-05)
      Bachelor thesis
      Open Access
      Aquest projecte constructiu, presenta les fases de desenvolupament, fabricació, producció i comercialització d'un instrumental electrònic que pot ser presentat com l'antagonista natural d'una font d'alimentació. Una ...