Now showing items 1-20 of 128

  • A battery-less, self-sustaining RF energy harvesting circuit with TFETs for µW power applications 

    Nunes Cavalheiro, David Manuel; Moll Echeto, Francisco de Borja; Valtchev, Stanimir (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Open Access
    This paper proposes a Tunnel FET (TFET) power management circuit for RF energy harvesting applications. In contrast with conventional MOSFET technologies, the improved electrical characteristics of TFETs promise a better ...
  • Absorptive frequency selective limiter for multiplexers 

    Hueltes Escobar, Alberto (Universitat Politècnica de Catalunya, 2012-07-05)
    Master thesis
    Restricted access - author's decision
    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 ...
  • A case of acquisition, transmission and use of information to control a manufacturing process 

    Fernández Román, Laura (Universitat Politècnica de Catalunya, 2009-10-08)
    Master thesis
    Open Access
  • A compact noise model for carbon nanotube FETs 

    Landauer, Gerhard Martin; González Jiménez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    This paper focuses on the development of a compact noise model for radiofrequency (RF) carbon nanotube field-effect transistors (CNFET). The noise mechanisms in these devices are discussed and the impact of the different ...
  • Actualización, adaptación y evolución del sistema de automedidas de receptores analógicos de TV 

    Domínguez González, Raúl (Universitat Politècnica de Catalunya, 2016-08)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  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)
    Master thesis
    Open Access
  • 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
    Restricted access - publisher's policy
    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 ...
  • Análisis de prestaciones de algoritmos pseudo-mlse en sistemas TCM aplicados a comunicaciones móviles 

    Alfaro, A. J.; Casadevall Palacio, Fernando José (1991)
    Conference report
    Open Access
    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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • 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)
    Conference report
    Open Access
    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)
    Conference lecture
    Open Access
    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 ...
  • A novel approach to MISO interference networks under maximum receive-power regulation 

    Pérez Neira, Ana Isabel; Vázquez Oliver, Miguel Ángel; Lagunas Hernandez, Miguel A. (WSEAS Press, 2018-07-01)
    Article
    Open Access
    An aggressive frequency reuse is expected within the next years in order to increase the spectral ef¿ciency. Multiuser interference by all in-band transmitters can create a communication bottleneck and, therefore, it is ...
  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Antenna subset selection for spatial modulation: a novel and energy efficient single RF technique 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013)
    Conference report
    Restricted access - publisher's policy
    In this paper, we propose a closed-loop and single RF multiple-input-multiple-output (MIMO) method, particularly suitable for the Uplink of cellular systems, which is based on the low-complexity and recently devised method ...
  • A RF generator based on a FPGA system 

    Puertas Molina, Eduard (Universitat Politècnica de Catalunya, 2014-03-06)
    Master thesis
    Open Access
    Covenantee:  Beijing hang kong hang tian da xue
    [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)
    Conference lecture
    Open Access
    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 ...
  • 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)
    Conference lecture
    Restricted access - publisher's policy
    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 ...
  • A transient model for RF cavity analysis under beam loading 

    Hassanzadegan, Hooman; Griñó Cubero, Robert (2010-04)
    Article
    Restricted access - publisher's policy
    There are two important considerations in the development of an electrical model for RF cavities to be used for system analysis or LLRF loop design, being: transient response and cavity impedance mismatch. In the literature, ...
  • 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)
    Bachelor thesis
    Open Access
    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)
    Bachelor thesis
    Open Access
    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 ...