Ara es mostren els items 1-20 de 138

  • 13.56 MHz power transfer system 

    Silvestre Costa, Ernest (Universitat Politècnica de Catalunya, 2015-05-19)
    Treball Final de Grau
    Accés obert
    In this TFG is proposed the design, implementation and characterization of a wireless power transfer system based on RFID technology. In the design stage the different software and previous calculations are made to design ...
  • A case of acquisition, transmission and use of information to control a manufacturing process 

    Fernández Román, Laura (Universitat Politècnica de Catalunya, 2009-10-08)
    Projecte Final de Màster Oficial
    Accés obert
  • A high dynamic-range RF programmable-gain front end for G.hn RF-Coax in 65-nm CMOS 

    Trulls Fortuny, Xavier; Mateo Peña, Diego; Bofill, Adrià (IEEE Microwave Theory and Techniques Society, 2012-10)
    Article
    Accés restringit per política de l'editorial
    A high-dynamic-range programmable-gain inductorless RF front end suitable for the RF-coax bandplan of the G.hn recommendation is presented. A double-input RF programmable gain amplifier (DI-RFPGA) with switchable capacitive ...
  • A novel reconstruction algorithm for the improvement of SMOS brightness temperatures 

    González Gambau, Veronica; Turiel, Antonio; Martinez, Justino; Olmedo, Edson; Corbella Sanahuja, Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    RFI (Radio Frequency Interference) sources, Sun signal and even land-sea transitions may generate large sidelobes that corrupt SMOS brightness temperature products and therefore, the quality of the soil moisture and sea ...
  • A RF generator based on a FPGA system 

    Puertas Molina, Eduard (Universitat Politècnica de Catalunya, 2014-03-06)
    Projecte Final de Màster Oficial
    Accés obert
    [ANGLÈS] This work is part of ongoing research conducted at Beihang University relating to signal generating. The primary objective of this thesis was to develop a flexible, high-performance Radio Frequency (RF) generator ...
  • A RF-MEMS switchable CPW air-bridge 

    Contreras, Adrián; Casals Terré, Jasmina; Pradell i Cara, Lluís; Giacomozzi, Flavio; Colpo, Sabrina; Iannacci, Jacopo; Ribó, Miquel (2012)
    Comunicació de congrés
    Accés obert
    This work presents a new shunt-type ohmic contact RF-MEMS switch specifically designed as a switchable CPW air bridge. The switch can be used in coplanar waveguide (CPW) reconfigurable multimodal circuits, for a selective ...
  • Absorptive frequency selective limiter for multiplexers 

    Hueltes Escobar, Alberto (Universitat Politècnica de Catalunya, 2012-07-05)
    Projecte Final de Màster Oficial
    Accés restringit per decisió de l'autor
    RF & Microwave Receivers are used to detect low level signals. Therefore require high gain and low noise sensitive circuits at the input. These circuits (most of all LNA) are often susceptible to damage if exposed to ...
  • Accuracy evaluation of probabilistic location methods in UWB-RFID systems 

    Núñez Álvarez, Christian; Crespo Cintas, Cristian (Universitat Politècnica de Catalunya, 2010-06-01)
    Projecte Final de Màster Oficial
    Accés obert
  • Actualización, adaptación y evolución del sistema de automedidas de receptores analógicos de TV 

    Domínguez González, Raúl (Universitat Politècnica de Catalunya, 2016-08)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Sony
    El proyecto consiste en la elaboración de un programa en entorno LabView para realizar medidas automáticas de sintonizadores de TV para la empresa Sony. Partimos de un programa básico de medidas semi-automáticas con la ...
  • Adjustment of Xia - Bertoni's propagation model for planning urban mobile environments through campaign results measurement 

    Deitx Roca, Ferran (Universitat Politècnica de Catalunya, 2010-07-23)
    Projecte Final de Màster Oficial
    Accés obert
  • An in-band frequency agility modem imlemented with a DSP device 

    Dalmau, J; Delgado, J; Serrat Fernández, Juan; Valle Alarcón, Rafael (Institute of Electrical and Electronics Engineers (IEEE), 1989)
    Text en actes de congrés
    Accés obert
    The authors present a modem with in-band frequency agility that has been implemented with the TMS 32010 signal processor. A strategy based on embedded real-time channel estimation (RTCE) has been adopted to manage the ...
  • An interference analysis on cellular mobile radiocommunications using CAD/CAE techniques 

    Marti, Javier; Cardona, Narcís; Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1992)
    Comunicació de congrés
    Accés obert
    The cochannel interference in a base-station's receiver of one cell produced by a mobile in another cell that uses the same frequency is studied. An OMNISYS simulation model of channel-plus-receiver is proposed and used ...
  • Análisis de prestaciones de algoritmos pseudo-mlse en sistemas TCM aplicados a comunicaciones móviles 

    Alfaro, A. J.; Casadevall Palacio, Fernando José (1991)
    Text en actes de congrés
    Accés obert
    This article describes the problematic of using TCM (frellis Coded Modulations) in a mobile indoor environment characterized by a fast fading Rayleigh channel. This modulation technique involves the use of MLSE (Maximum ...
  • Análisis y diseño de un oscilador en banda V 

    Salazar Soler, Jorge; Corbella Sanahuja, Ignasi (1991)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper the analysis and design of an oscillator in V ban is presented. Taking advantage of a coaxial oscillation, some results related with frequency stability have been obtained. A special attention has been paid ...
  • Aplicación de las TIC a la trazabilidad en la cadena de montaje de una bomba de inyección diesel 

    Singh Kaur, Jatinder Pal (Universitat Politècnica de Catalunya, 2012-01-04)
    Treball Final de Grau
    Accés restringit per decisió de l'autor
  • Assessment of back-end RFI mitigation techniques in passive remote sensing 

    Querol Borràs, Jorge; Alonso Arroyo, Alberto; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Camps Carmona, Adriano José (2015)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Radio-Frequency Interference (RFI) is a growing problem specially for those systems that work with low power signals such as passive remote sensing instruments. Consequently, RFI mitigation techniques are currently under ...
  • Automatización de un proceso para identificación y control de elementos hospitalarios en zonas de paso 

    Casas Schmitt, Guillem (Universitat Politècnica de Catalunya, 2015-10-14)
    Treball Final de Grau
    Accés obert
    Aquest projecte es basa en l'ús de la tecnologia RFID (acrònim de l'anglès Radio Frequency IDentification) per al control i la traçabilitat dels diferents elements existents en un centre hospitalari. Per tant, l'objectiu ...
  • Banco de pruebas de comuniciones en banda L 

    Morales Bustos, Mª Lourdes (Universitat Politècnica de Catalunya, 2012-11-30)
    Treball Final de Grau
    Accés obert
    In this Thesis work an analysis has been carried out about the subject 'Enginyeria de RF' which is included in the curriculum of the 'Grado in Ingeniería de Sistemas de Comunicación of the Escola d'Enginyeria de Telecomunicació ...
  • Campanya de mesures de l'ocupació de l'espectre al Campus Nord de la UPC 

    Solé Cabrera, Arnau (Universitat Politècnica de Catalunya, 2016)
    Projecte/Treball Final de Carrera
    Accés obert
    Nowadays, there is a lack of radio-channels (frequencies) where the new telecommunications systems can operate. The most part of the available radio-channels have been statically allocated and only can work with one specific ...
  • Caractérisation des signaux radio avec des outils de traitement d’images 

    Morral Adell, Gemma (Universitat Politècnica de Catalunya, 2011-05-09)
    Projecte/Treball Final de Carrera
    Accés obert
    Català: Ens basem en una representació 2D en temps-freqüència dels senyals rebuts després d'una detecció no-coherent ("square law detector" és a dir, es prèn el módul al quadrat de les NFFT dels senyals rebuts dins una ...