Now showing items 1-20 of 25

  • 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. ...
  • Analysis and modelling of parasitic substrate coupling in CMOS circuits 

    Aragonès Cervera, Xavier; Moll Echeto, Francisco de Borja; Roca Adrover, Miquel; Rubio Sola, Jose Antonio (1995-10)
    Article
    Restricted access - publisher's policy
    Analysis of the substrate coupling in integrated circuits is done taking into account technology and layout parameters for different types and location of transistors using a device-level simulator. The noise coupling ...
  • Analysis of body bias and RTN-induced frequency shift of low voltage ring oscillators in FDSOI technology 

    Barajas Ojeda, Enrique; Aragonès Cervera, Xavier; Mateo Peña, Diego; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio; Martin Martínez, Javier; Rodríguez Martínez, Rosana; Porti Pujal, Marc; Nafria, M.; Castro López, Rafael; Roca Moreno, Elisenda; Fernandez, Francisco V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Electronic circuits powered at ultra low voltages (500 mV and below) are desirable for their low energy and power consumption. However, RTN (Random Telegraph Noise)-induced threshold voltage variations become very significant ...
  • A versatile CMOS transistor array IC for the statistical characterization of time-zero variability, RTN, BTI, and HCI 

    Diaz Fortuny, Javier; Martin Martínez, Javier; Rodríguez Martínez, Rosana; Castro López, Rafael; Roca Moreno, Elisenda; Aragonès Cervera, Xavier; Barajas Ojeda, Enrique; Mateo Peña, Diego; Fernández Fernández, Francisco V.; Nafría Maqueda, Montserrat (2018-01-01)
    Article
    Open Access
    Statistical characterization of CMOS transistor variability phenomena in modern nanometer technologies is key for accurate end-of-life prediction. This paper presents a novel CMOS transistor array chip to statistically ...
  • Bluetooth: circuits, sistemes i aplicacions en l'entorn de les TIC 

    Aragonès Cervera, Xavier; González, José Luis; Pérez Neira, Ana Isabel; Casadevall Palacio, Fernando José; Paradells Aspas, Josep (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2005-02)
    Conference report
    Open Access
    En el projecte s'han implementat uns mòduls formatius, que inclouen tant una vessant teòrica com una part experimental, que permetin a un estudiant de segon cicle de la ETSETB conèixer i desenvolupar aplicacions sobre un ...
  • Contribució a l'estudi de l'acoblament per substrat en circuits integrats mixtes 

    Aragonès Cervera, Xavier (Universitat Politècnica de Catalunya, 1997-12-16)
    Doctoral thesis
    Open Access
    L'acoblament de soroll a través del substrat en circuits integrats mixtos és un important problema que sovint limita les prestacions de la circuiteria analògica. Les característiques d'aquest tipus d'acoblament i els factors ...
  • DC temperature measurements to characterize the central frequency and 3 dB bandwidth in mmW power amplifiers 

    Aragonès Cervera, Xavier; Mateo Peña, Diego; González Jiménez, José Luis; Vidal López, Eva María; Gómez Salinas, Didac; Martineau, B; Altet Sanahujes, Josep (2015-11)
    Article
    Open Access
    This letter shows how a temperature sensor and a simple DC voltage multimeter can be used as instruments to determine the central frequency and 3 dB bandwidth of a 60 GHz linear power amplifier (PA). Compared to previous ...
  • Desenvolupament de plataformes docents per a l'adquisició de mesures i el control de processos industrials 

    Aragonès Cervera, Xavier (2006)
    Poster (CCD project)
    Open Access
  • Desenvolupament d'un sistema de comunicacions integrat per part d'estudiants de 2on cicle de l'ETSETB de la Universitat Politècnica de Catalunya 

    González Jiménez, José Luis; Mateo Peña, Diego; Aragonès Cervera, Xavier (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2005-02)
    Conference report
    Open Access
    El projecte ha consistit en el disseny i fabricació d’un circuit integrat que conté un receptor Bluetooth per a xarxes sense fils en una tecnologia CMOS de 0,35 m. Els objectius del projecte eren realitzar una experiència ...
  • Design of a 2.5-GHZ QVCO robust against high frequency substrate noise 

    Molina Garcia, Marc Manel; Gómez Salinas, Dídac; Aragonès Cervera, Xavier; Mateo Peña, Diego; González Jiménez, José Luis (2011-07)
    Article
    Restricted access - publisher's policy
    This work presents the design procedure followed to obtain a low-power voltage-controlled oscillator (VCO) robust against high-frequency substrate noise, using as a demonstrator a 2.5 GHz VCO with quadrature outputs (QVCO) ...
  • Design of a broadband CMOS RF power amplifier to establish device-circuit aging correlations 

    Barajas Ojeda, Enrique; Mateo Peña, Diego; Aragonès Cervera, Xavier; Crespo Yepes, Albert; Rodríguez Martínez, Rosana; Martin Martínez, Javier; Nafría Maqueda, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This paper presents the design of a Broadband CMOS RF Power Amplifier, suitable to be stressed at circuit level but with the possibility to be measured both at circuit and at device level. It allows establishing a relation ...
  • Diseño de circuitos y sistemas integrados 

    Rubio, Antonio; Altet Sanahujes, Josep; Aragonès Cervera, Xavier; González Jiménez, José Luis; Mateo Peña, Diego; Moll Echeto, Francisco de Borja (Edicions UPC, 2003)
    Book
    Restricted access to UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC users
    La tecnología de circuitos integrados, basada principalmente en la miniaturización de los circuitos ha evolucionado intensamente en los últimos tiempos. El objetivo de esta obra es dar a conocer esta evolución reciente y ...
  • Effect of high frequency substrate noise on LC-VCOs 

    Molina Garcia, Marc Manel; Aragonès Cervera, Xavier; Mateo Peña, Diego; González Jiménez, José Luis (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Open Access
    This paper presents an experimental analysis of the performance degradation of an LC-Voltage Controlled Oscillator (LC-VCO) produced by high frequency noise present in the substrate. The spurs observed are shown to be ...
  • Inductor shielding strategies to protect mmW LC-VCOs from high frequency substrate noise 

    Molina García, Marc; Aragonès Cervera, Xavier; Mateo Peña, Diego; González Jiménez, José Luis (2013-05-01)
    Article
    Restricted access - publisher's policy
    This paper analyzes the impact of high-frequency substrate noise on two 60 GHz LC-VCOs that implement different strategies for inductor shielding, namely floating and grounded shields. An analytical model, which has ...
  • Laboratorio de electrónica : curso básico 

    Aragonès Cervera, Xavier (Edicions UPC, 2000)
    Book
    Restricted access to the UPC academic community
    Este libro ha sido elaborado por un equipo de profesores del Departamento de Ingeniería Electrónica de la UPC que imparten dichos contenidos a los estudiantes de primer curso de las titulaciones de Ingeniería de Telecomunicación ...
  • MOSFET degradation dependence on input signal power in a RF power amplifier 

    Crespo Yepes, Albert; Barajas Ojeda, Enrique; Martin Martínez, Javier; Mateo Peña, Diego; Aragonès Cervera, Xavier; Rodríguez Martínez, Rosana; Nafría Maqueda, Montserrat (2017-06-25)
    Article
    Open Access
    Aging produced by RF stress is experimentally analyzed on a RF CMOS power amplifier (PA), as a function of the stress power level. The selected circuit topology allows observing individual NMOS and PMOS transistors ...
  • Noise generation and coupling mechanisms in deep-submicron IC's 

    Aragonès Cervera, Xavier; González Jiménez, José Luis; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio (2002-09)
    Article
    Open Access
    On-chip noise generation and coupling is an important issue in deep-submicron technologies. Advanced IC technology faces new challenges to ensure function and performance integrity. Selecting adequate test techniques ...
  • On evaluating temperature as observable for CMOS technology variability 

    Altet Sanahujes, Josep; Gómez Salinas, Dídac; Dufis, Cédric Yvan; González Jiménez, José Luis; Mateo Peña, Diego; Aragonès Cervera, Xavier; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio (2010-05-26)
    Conference report
    Open Access
    The temperature at surface of a silicon die depends on the activity of the circuits placed on it. In this paper, it is analyzed how Process, Voltage and Temperature (PVT) variations affect simultaneously some figures ...
  • Phase noise degradation of LC-tank VCOs due to substrate noise and package coupling 

    Méndez, M A; Mateo Peña, Diego; Aragonès Cervera, Xavier; González Jiménez, José Luis (IEEE, 2005)
    Conference report
    Open Access
    The present work addresses the investigation of phase noise degradation of LC-tank VCOs due to realistic digitally originated substrate noise. The dominant mechanisms by which this noise is coupled to the output of the ...
  • Prediction of the impact of substrate coupled switching noise on frequency synthesizers 

    Osorio Tamayo, Juan Felipe; Aragonès Cervera, Xavier (2012-03-01)
    Article
    Restricted access - publisher's policy
    This paper proposes a methodology to accurately predict the phase noise effects in frequency synthesizers as a consequence of switching noise coupled through the substrate. The method proposed is based on a phase model of ...