Exploració per autor "González Jiménez, José Luis"

Ara es mostren els items 21-40 de 45

    • Diseño de circuitos y sistemas integrados 

      Rubio Sola, Jose Antonio; Altet Sanahujes, Josep; Aragonès Cervera, Xavier; González Jiménez, José Luis; Mateo Peña, Diego; Moll Echeto, Francisco de Borja (Edicions UPC, 2003)
      Llibre
      Accés restringit als usuaris de la UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC
      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 ...

    • DLL's behavioral modeling for power consumption and jitter fast optimization 

      Barajas Ojeda, Enrique; Mateo Peña, Diego; González Jiménez, José Luis (2010)
      Text en actes de congrés
      Accés obert
      This paper analyzes the sources of jitter in a DLL and presents a behavioral model for fast DLL optimization. An algorithm to simulate the DLL in open loop is demonstrated. This procedure, together with the behavioral ...

    • 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)
      Text en actes de congrés
      Accés obert
      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 ...

    • Electro-thermal characterization of a differential temperature sensor and the thermal coupling in a 65nm CMOS IC 

      Altet Sanahujes, Josep; González Jiménez, José Luis; Gómez Salinas, Dídac; Perpiñà, Xavier; Grauby, Stephane; Dufis, Cédric Yvan; Vellvehi, Miquel; Mateo Peña, Diego; Dilhaire, Stefan; Jordà, Xavier (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper explains the design decisions and the different measurements we have done in order to characterize the thermal coupling and the ch aracteristics of temperature sensors embedded in a integrated circuit ...

    • Electro-thermal coupling analysis methodology for RF circuits 

      Gómez Salinas, Didac; Dufis, Cédric Yvan; Altet Sanahujes, Josep; Mateo Peña, Diego; González Jiménez, José Luis (2012-09)
      Article
      Accés restringit per política de l'editorial
      In this paper an electro-thermal co-simulation methodology suitable for RF circuits is presented. It circumvents traditional transient simulation drawbacks that arise when signals or magnitudes whose frequencies are separated ...

    • Frequency characterization of a 2.4 GHz CMOS LNA by Thermal Measurements 

      Mateo Peña, Diego; Altet Sanahujes, Josep; Aldrete Vidrio, Héctor; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2006)
      Text en actes de congrés
      Accés obert
      This paper presents a technique to obtain electrical characteristics of analog and RF circuits, based on measuring temperature at the silicon surface close to the circuit under test. Experimental results validate the ...

    • Improved current-source sizing for high-speed high-accuracy current steering d/a converters 

      Miquel, Albiol; González Jiménez, José Luis; Alarcón Cot, Eduardo José (IEEE, 2003)
      Text en actes de congrés
      Accés obert
      This paper describes a design methodology for the basic current source cell circuit of high-speed high-accuracy current steering DIA conveners taking into account mismatching in all the transistors of the cell. Previous ...

    • 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
      Accés restringit per política de l'editorial
      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 ...

    • Inforrme de la segona anualitat del projecte CATRENE-PANAMA per al programa AVANZA I+D 

      González Jiménez, José Luis; Dufis, Cédric Yvan (2011-03-16)
      Report de recerca
      Accés restringit per acord de confidencialitat
      Informe de les tasques i activitats desenvolupades al projecte europeu CATRENE-PANAMA durant l'any 2010 per el grup de recerca de la UPC HiPICS

    • 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 ...