Ara es mostren els items 30-45 de 45

    • Mismatch and dynamic modeling of current sources in current-steering cmos d/a converters: an extended design procedure 

      Albiol, Miquel; González Jiménez, José Luis; Alarcón Cot, Eduardo José (2004-01)
      Article
      Accés restringit per política de l'editorial
      This paper presents an improved modeling of the effect of random mismatch and current source transient switching behavior on the performance of current-steering CMOS digital-toanalog converters (DACs). The work considers ...
    • 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
      Accés obert
      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 ...
    • Non-invasive Monitoring of CMOS Power Amplifiers Operating at RF and mmW Frequencies using an On-chip Thermal Sensor 

      González Jiménez, José Luis; Martineau, Baudouin; Mateo Peña, Diego; Altet Sanahujes, Josep (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper a non-invasive, contact-less technique for the on-chip observation of PA operation is presented. It uses a differential temperature sensor that transduces the temperature increase due to the power dissipated ...
    • 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)
      Text en actes de congrés
      Accés obert
      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 ...
    • On the electrical properties of slotted metallic planes in CMOS processes for RF and millimeter-wave applications 

      González Jiménez, José Luis; Martineau, Baudouin; Belot, Didier (2012-05-17)
      Article
      Accés restringit per política de l'editorial
      This paper presents a study of the effects of slottedmetallicplanes in passive structures built using CMOSprocesses for RF and millimeter-wave (mmW) applications. The impact of holes on the reference plane resistance and ...
    • 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)
      Text en actes de congrés
      Accés obert
      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 ...
    • Process and temperature compensation for RF low-noise amplifiers and mixers 

      Gómez Salinas, Dídac; Sroka, Milosz; González Jiménez, José Luis (2009-12-18)
      Article
      Accés obert
      Temperature and process variations have become key issues in the design of integrated circuits using deep submicron technologies. In RF front-end circuitry, many characteristics must be compensated in order to maintain ...
    • Providing an UWB-IR BAN wireless communications network and its application to design a low power transceiver in CMOS technology 

      Barajas Ojeda, Enrique; Mateo Peña, Diego; González Jiménez, José Luis (Universitat Politècnica de Catalunya, 2010)
      Text en actes de congrés
      Accés obert
      Ultra Wide-Band (UWB) communication techniques have received increasing attention since United States Federal Communications Commission (FCC) adopted a “First Report and Order” in 2002. Unfortunately the regulations that ...
    • Shape effects on electromigration in VLSI interconnects 

      González Jiménez, José Luis; Rubio Sola, Jose Antonio (1997-07)
      Article
      Accés restringit per política de l'editorial
      The influence of the shape of VLSI interconnects on the lifetime due to electromigration is investigated. Simulations and experiments indicate that, in some cases, the right angle corners of the metal lines, widely ...
    • Tcmos: low noise power supply technique for digital ics 

      González Jiménez, José Luis; Rubio Sola, Jose Antonio (1995-08)
      Article
      Accés obert
      Mixed signal circuits have become an important trend in IC design. In these circuits, the effect of digital noise on the analogue part of the circuit is one of the most important performance constraints. The authors ...
    • Temperature sensors to measure the central frequency and 3 dB bandwidth in mm W power amplifiers 

      Altet Sanahujes, Josep; Mateo Peña, Diego; Gómez Salinas, Dídac; González Jiménez, José Luis; Martineau, B.; Siligaris, Alexandre; Aragonès Cervera, Xavier (2014-04)
      Article
      Accés restringit per política de l'editorial
      This letter introduces a novel on-chip measurement technique for the determination of the central frequency and 3 dB bandwidth of a 60 GHz power amplifier (PA) by performing low frequency temperature measurements. The ...
    • Técnicas de reducción del ruido de conmutación en circuitos integrados CMOS 

      González Jiménez, José Luis (Universitat Politècnica de Catalunya, 1998-01-19)
      Tesi
      Accés obert
      El ruido de conmutación generado por los circuitos digitales representa un problema importante que a menudolimita las prestaciones de los circuitos integradosdigitales y mixtos. éste ruido de conmutación estápresente en ...
    • THERMAL OBSERVATION OF A MODULATED INPUT FOR A 2.5GHZ CMOS POWER AMPLIFIER Part 1: Feasibility study 

      Martin, Mikel; González Jiménez, José Luis (2011-03-02)
      Report de recerca
      Accés restringit per política de l'editorial
      In this Project, the verification of the possibility of extraction of information of a modulated signal through no-invasive thermal measurements is done. The main objective is that using a non-invasive thermal technique, ...
    • THERMAL OBSERVATION OF A MODULATED INPUT FOR A 2.5GHZ CMOS POWER AMPLIFIER Part 2: Temperature Sensor 

      Martín, Mikel; González Jiménez, José Luis (2011-04-25)
      Report de recerca
      Accés restringit per política de l'editorial
      The temperature sensor used is based on the usual two bipolar transistors temperature sensor with some modifications to allow for external calibration (or “re-centering”).
    • THERMAL OBSERVATION OF A MODULATED INPUT FOR A 2.5GHZ CMOS POWER AMPLIFIER Part 3: PA+Sensor layout integration and PVT analysis 

      Martín, Mikel; González Jiménez, José Luis (2011-05-16)
      Report de recerca
      Accés restringit per política de l'editorial
      The objective is to detect the impact of PVT variations (Process, Voltage and Temperature variations) on the figures of merit of a device.
    • VCO phase noise and sideband spurs due to substrate noise generated by on-chip digital circuits 

      Méndez Villegas, Miguel Ángel; Osorio Tamayo, Juan Felipe; Mateo Peña, Diego; Aragonès Cervera, Xavier; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2006)
      Text en actes de congrés
      Accés obert
      This paper presents the effects of noise generated by realistic digital circuits on RF voltage controlled oscillators (VCO) integrated in the same silicon die. The digital noise is coupled through the common substrate and ...