Now showing items 176-195 of 206

    Radiated transient interferences in digital communication systems 

    Pous Solà, Marc (Date of defense: 2015-04-24)

    In the Electromagnetic Compatibility research area, an unsolved interference problem is the measurement and evaluation of the distortion produced by radiated transient disturbances on digital communication systems. This ...

    Regular cell design approach considering lithography-induced process variations 

    Gómez Fernández, Sergio (Date of defense: 2014-10-17)

    The deployment delays for EUVL, forces IC design to continue using 193nm wavelength lithography with innovative and costly techniques in order to faithfully print sub-wavelength features and combat lithography induced ...

    Reliability-aware circuit design to mitigate impact of device defects and variability in emerging memristor-based applications 

    Escudero López, Manuel (Date of defense: 2020-05-22)

    In the last decades, semiconductor industry has fostered a fast downscale in technology, propelling the large scale integration of CMOS-based systems. The benefits in miniaturization are numerous, highlighting faster ...

    Reliability-aware memory design using advanced reconfiguration mechanisms 

    Pouyan, Peyman (Date of defense: 2015-11-16)

    Fast and Complex Data Memory systems has become a necessity in modern computational units in today's integrated circuits. These memory systems are integrated in form of large embedded memory for data manipulation and ...

    Scene segmentation using neuromorphic networks 

    Cosp Vilella, Jordi (Date of defense: 2002-07-08)

    Els avanços en neurociència han portat el desenvolupament de models complexes de neurones artificials semblants a les seves contraparts biològiques. Aquests models han millorat la funcionalitat de les xarxes neuronals ...

    Segmental and whole body electrical impedance measurements in dialysis patients 

    Nescolarde Selva, Lexa (Date of defense: 2006-07-20)

    The main objective of this thesis is to contribute to the prevention and control of the cardiovascular risk, hydration state and nutritional state in dialysis patients using non-invasive electrical impedance measurements. ...

    Selective thermal emitters based on photonic crystals 

    Hernández García, David (Date of defense: 2014-10-23)

    Un dels límits fonamentals que afecta l'eficiència de conversió en cèl·lules fotovoltaiques és la distribució espectral de la radiació solar. D'una banda, només els fotons amb energia superior al gap del semiconductor poden ...

    Self-healing and secure low-power memory systems 

    Neagu, Mădălin (Date of defense: 2017-09-08)

    The main objective of this thesis is to bring new contributions to the self-healing and secure systems domain. In particular, to develop a self-healing technique for memory systems and to increase security of memory systems, ...

    Sensors i estratègies de test de circuits digitals CMOS per vigilància del consum 

    Rius Vázquez, Josep (Date of defense: 1997-06-13)

    El objetivo de la tesis es realizar aportaciones en el campo de las estrategias de test basadas en la vigilancia del consumo quiescente de los circuitos integrados CMOS y de los sensores utilizados para dicho fin (test de ...

    Sigma-Delta control of charge trapping in heterogeneous devices 

    Bheesayagari, Chenna Reddy (Date of defense: 2019-11-04)

    Dielectric charging represents a major reliability issue in a variety of semiconductor devices. The accumulation of charge in dielectric layers of a device often alters its performance, affecting its circuital features and ...

    Silicon heterojunction solar cells obtained by Hot-Wire CVD 

    Muñoz Cervantes, Delfina (Date of defense: 2008-07-21)

    El elevado coste de producción de los módulos de silicio cristalino (c-Si) dificulta el progreso de la industria fotovoltaica como una alternativa viable para la producción de energía limpia. Por esta razón, los fabricantes ...

    Simulació 2D/3D de cèl.lules solars de silici de contactes posteriors 

    Carrió Díaz, David (Date of defense: 2022-07-25)

    In order to optimize photovoltaic conversion efficiency, various solar cell architectures based on monocrystalline silicon (c-Si) have emerged in the past. Solar cells with interdigitated back contacts IBC (Interdigitated ...

    Simulación Monte Carlo de transistores bipolares de heterounión abrupta (HBT) 

    Garcias Salvà, Pau (Date of defense: 1999-07-23)

    El desarrollo de la tecnología electrónica hace necesario disponer de modelos fiables de los dispositivos y convierte la simulación de los mismos en un elemento estratégico para su desarrollo presente y futuro. El transistor ...

    Simulation and design of all-optical logic gates based on photonic crystals 

    Yoosefi, Oraman (Date of defense: 2021-07-07)

    In this thesis, design and simulation of optical logic gases based on different photonics crystals presented to used in the electronics and telecommunication industries. Optical devices perform faster with higher efficiencies ...

    Sistemas inalámbricos para la monitorización continua del comportamiento de especies marinas 

    Sarriá Gandul, David (Date of defense: 2014-04-02)

    In this Thesis, new methods for monitoring marine species using optical, radio frequency and acoustic technologies have been proposed and evaluated for biological studies in the laboratory and open sea. A study of the ...

    Síntesis de estructuras multiplicadoras de tensión basadas en células convertidoras continua-continua de tipo conmutado. 

    Giral Castillón, Roberto (Date of defense: 1999-07-05)

    Uno de los campos más importantes de la Electrónica de Potencia es el de los convertidores de potencia conmutados, que debido a sus características de alto rendimiento energético, reducido tamaño, posibilidades de regulación ...

    SSCG methods of EMI emissions reduction applied to switching power converters 

    Santolaria Lorenzo, José Alfonso (Date of defense: 2004-07-01)

    Many methods for EMI suppression have been developed in the last fifty years, most of them, showing a hardly change in its implementation. Traditional tools for EMI suppression are related to the use of filters, shielding ...

    Studies on organic solar cells based on small-molecules : tetraphenyldibenzoperiflanthene and fullerene C70 

    Galindo Lorente, Sergi (Date of defense: 2015-11-18)

    This work deals with the research on organic solar cells based on small-molecules semiconductors. In particular, organic solar cells of this thesis have been used tetraphenyldibenzoperiflanthene as donor material and ...

    Surface passivation of crystalline silicon by amorphous silicon carbide films for photovoltaic applications 

    Ferré Tomàs, Rafel (Date of defense: 2008-04-11)

    En aquesta tesi s'estudia la passivació del silici cristal·lí per a la producció de cèl·lules solars d'alta eficiència (> 20%) a baix preu.<br/>Actualment la indústria fotovoltaica empra capes de nitrur de silici crescut ...

    Tecnología de fabricación de células solares con materiales candidatos a presentar banda intermedia 

    Boronat Moreiro, Alfredo (Date of defense: 2013-10-11)

    This work has been developed in a line of research related whit the Intermediate Band (IB) concept, which explores overcoming the photovoltaic efficiency limits established for solar cells. The IB concept implies two issues: ...