Exploració per tema "Filters"

Ara es mostren els items 1-19 de 19

    • A first assessment of an aerodynamic barrier layer for filtering airborne hygroscopic particles 

      Arias Montenegro, Francisco Javier; Heras Jiménez, Salvador Augusto de las (2021-09-01)
      Article
      Accés obert
      In this work consideration is given to an aerodynamic concept for filtration of small water droplets such as those caused by an infected person when coughs or sneezes and including airborne hygroscopic particle, and with ...

    • A low-power RF front-end for 2.5 GHz receivers 

      Moreno Boronat, Lidia Ana; Gómez, D; González Jiménez, José Luis; Mateo Peña, Diego; Aragonès Cervera, Xavier; Berenguer, R; Solar, H (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Text en actes de congrés
      Accés obert
      This paper presents a low power and low cost front end for a direct conversion 2.5 GHz ISM band receiver composed of a 16 kV HBM ESD protected LNA, differential Gilbert-cell mixers, and high-pass filters for DC offset ...

    • Análisis de espectrogramas de señales musicales con operadores morfológicos 

      Bustos Manzanet, Laura (Universitat Politècnica de Catalunya, 2020-01)
      Treball Final de Grau
      Accés obert
      The way an instrument is learned to be played has changed a lot since the rise of the internet, specially the show up of YouTube. High amounts of people learn to play instruments such as the guitar from watching videos and ...

    • Automatización y control de un motor a pasos para la sintonización de filtros de microondas 

      Benet Freissinier, Josep (Universitat Politècnica de Catalunya, 2010-12-15)
      Projecte/Treball Final de Carrera
      Accés obert
      Català: L'objectiu del projecte és ajustar de forma automàtica la freqüència central de un ressonador de microones a la freqüència que desitgi l'usuari. Per aconseguir-ho, s'introdueix la freqüència desitjada al software ...

    • Cleaning and measuring tools using digital image processing methods 

      Torres Xirau, Iban (Universitat Politècnica de Catalunya / Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik, 2013-07-31)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Technische Universität Berlin
      [ANGLÈS] Many industrial machines use screws and other small tools to fix smaller components that compose the whole structure of the machine. To ensure that these tools withstand the pressures that can be subjected at, a ...

    • Comprehensive circuit model of auto-limiting superconductor devices and systems 

      Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; Hueltes Escobar, Alberto; O'Callaghan Castellà, Juan Manuel; García Pastor, David; Perea Robles, Rafael; Joshi, N.; Lu, X.; Orloff, Nathan D.; Booth, James C. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper presents a phenomenological equivalent circuit to model the phenomenon occurring when a section of superconducting transmission line transits from a superconducting state to a normal state. This phenomenon allows ...

    • Comprehensive circuit model of autolimiting superconductor devices 

      Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; Hueltes Escobar, Alberto; O'Callaghan Castellà, Juan Manuel; García Pastor, David; Perea Robles, Rafael; Joshi, N.; Lu, X.; Orloff, Nathan D.; Booth, James C. (2017-06-01)
      Article
      Accés obert
      This paper presents a phenomenological equivalent circuit to model the phenomenon occurring when a section of superconducting transmission line transits from a superconducting state to a normal state. This phenomenon allows ...

    • Disseny d'un filtre passa-banda de microones amb estructures Three-Line-Microstrip (TLM) 

      Domènech Fernàndez, Lídia (Universitat Politècnica de Catalunya, 2022-07-05)
      Treball Final de Grau
      Accés obert
      In this project, new structures for the design and fabrication of band-pass filters with Three-Line-Microstrip structures are under study to achieve a shorter physical length than a filter design with coupled lines. Although ...

    • Flexible compiler-managed L0 buffers for clustered VLIW processors 

      Gibert Codina, Enric; Sánchez Navarro, F. Jesús; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2003)
      Text en actes de congrés
      Accés obert
      Wire delays are a major concern for current and forthcoming processors. One approach to attack this problem is to divide the processor into semi-independent units referred to as clusters. A cluster usually consists of a ...

    • FPGA based label processor for large scale optical packet switch node 

      Osers Benaim, Alan (Universitat Politècnica de Catalunya, 2011-09-09)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Technische Universiteit Eindhoven
      English: The Internet demand is leading us into the creation of faster and more efficient networks. At the present time the servers that hold the mayor part of the cloud are grouped in thousands inside clusters. A cluster ...

    • Mechanical tuning of substrate integrated waveguide filters 

      Mira, Fermin; Mateu Mateu, Jordi; Collado Gómez, Juan Carlos (IEEE Microwave Theory and Techniques Society, 2015-12-01)
      Article
      Accés obert
      This paper presents a novel approach for tuning substrate integrated waveguide resonators, realized by placing an additional metallized via-hole on the waveguide cavity. The approach presented here can be applied as a ...

    • New synthesis features and nonlinear modelling of electroacoustic filters for cellular and space applications 

      Navarro Gessé, Edgar (Universitat Politècnica de Catalunya, 2023-07-13)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Electroacoustic filters, also known as acoustic wave (AW) filters, are very helpful in space missions since they can operate reliably under the harsh conditions of space at very high frequencies. The performance of electrical ...

    • On the properties of discrete spatial filters for CFD 

      Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Trias Miquel, Francesc Xavier; Pérez Segarra, Carlos David (2016-12-01)
      Article
      Accés obert
      The spatial filtering of variables in the context of Computational Fluid Dynamics (CFD) is a common practice. Most of the discrete filters used in CFD simulations are locally accurate models of continuous operators. However, ...

    • Prototipo de una prótesis de mano para niños y niñas 

      Badiola Iparraguirre, Ane (Universitat Politècnica de Catalunya, 2020-06-23)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      [CASTELLÀ] Este proyecto, corresponde a la segunda parte del proyecto de diseño y fabricación del prototipo de una prótesis de una mano mioeléctrica para niños y niñas de 10 años. Con la finalidad de conseguir mayor ...

    • RF-MEMS switches designed for high-performance uniplanar microwave and mm-wave circuits 

      Pradell i Cara, Lluís; Girbau Sala, David; Ribó Pal, Miquel; Casals Terré, Jasmina; Lázaro Guillén, Antonio; Contreras Lizárraga, Adrián; Llamas Morote, Marco Antonio; Heredia Vega, Julio César; Giacomozzi, Flavio; Margesin, Benno (IntechOpen, 2018-07-18)
      Capítol de llibre
      Accés obert
      Radio frequency microelectromechanical system (RF-MEMS) switches have demonstrated superior electrical performance (lower loss and higher isolation) compared to semiconductor-based devices to implement reconigurable microwave ...

    • Selection of zeros of reflection coefficient in design of filters by insertion loss 

      Mariño Acebal, José Bernardo (Institution of Electrical Engineers, 1974-04-18)
      Article
      Accés obert

    • Selection of zeros of reflection coefficient in the design of filters by insertion loss 

      Mariño Acebal, José Bernardo (Institution of Electrical Engineers, 1974-04-18)
      Article
      Accés obert

    • The Kolmogorov mapping theorem in signal processing 

      Lagunas Hernandez, Miguel A. (1994)
      Text en actes de congrés
      Accés obert
      Since the publication in 1957 of the work of Andrei Kolmogorov 181 in mapping a function of multiple variables by means functions of a single variable, many mathematicians and engineers try , with different degree ...

    • Unsupervised morphological segmentation for images 

      Salembier Clairon, Philippe Jean (. IEEE, 1993)
      Text en actes de congrés
      Accés obert
      This paper deals with a morphological approach to unsupervised image segmentation. The proposed technique relies on a multiscale Top-Down approach allowing a hierarchical processing of the data ranging from the most global ...