Exploració per tema "Interferència electromagnètica"

Ara es mostren els items 21-40 de 51

    • Efectos de las interferencias electromagnéticas en la operativa de drones 

      Vallhonrat Blanco, Laura (Universitat Politècnica de Catalunya, 2017-09-14)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Hemav
      Companies that work with drones often encounter electromagnetic compatibility problems when flying near communication antennas. This document aims to characterize and measure the type of waves that cause interferences and ...

    • Electromagnetic interference prediction in an in-house power-line 

      Samso, Margarita; Ribó, Miquel; Sanchez, Albert-Miquel; Regué, J.R.; Aragon Homar, Marc; Silva Martínez, Fernando (IEEE, 2012)
      Text en actes de congrés
      Accés obert
      Abstract —In this paper a new methodology for the prediction of the conducted-emission propagation in an in-house power- line network is presented. This methodology is based on the modal S -parameter characterization ...

    • EMC testing of electricity meters using real-world and artificial current waveforms 

      Van Den Brom, H.E.; ten Have, Bas; Hartman, Tom; Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Silva Martínez, Fernando; Leferink, F.; van Leeuwen, Ronald; Marais, Zander; Kok, Gertjan J. P.; van Veghel, Marijn G. A.; Kolevatov, Ilia; Malmbekk, Helge (2021)
      Article
      Accés obert
      In 2015, the energy measurement of some static electricity meters was found to be sensitive to specific conducted electromagnetic disturbances with very fast current changes caused by highly nonlinear loads, leading to ...

    • Enhanced electromagnetic interference shielding effectiveness of polycarbonate/graphene nanocomposites foamed via 1-step supercritical carbon dioxide process 

      Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio; Ozisik, Rahmi (2016-01)
      Article
      Accés obert
      The dielectric and electromagnetic interference (EMI) shielding properties of polycarbonate/graphene nanocomposites foamed using supercritical carbon dioxide were studied as a function of their cellular and compositemorphology. ...

    • Estudio e implementación de nuevas técnicas de modulación para la reducción de perturbaciones EMI en convertidores matriciales 

      Espina Masramon, Jordi (Universitat Politècnica de Catalunya, 2012-11-07)
      Tesi
      Accés obert
      El procesamiento de la energía mediante convertidores electrónicos conmutados ha tomado una relevancia notable durante la última década, y presumiblemente será uno de los campos de la ingeniería con mayor proyección ...

    • Fast and automated verification of multi-channel full time-domain EMI measurement systems 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Silva Martínez, Fernando; Oliva Sánchez, José Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés obert
      Recently, concern has been raised with regard to the adequacy of current verification practices carried out in electromagnetic compatibility (EMC) testing laboratories. Bridging the gap in the scope and reliability of the ...

    • Full Time Domain EMI Measurement system applied to Railway emissions according to IEC 62236-3-1/EN 50121-3-1 standards 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Oliva Sánchez, José Antonio; Aragon Homar, Marc; González García, Iván; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
      Accés obert
      This paper studies the advantages of applying time-domain based instrumentation to conduct electromagnetic interference emissions from rolling-stock. In IEC 62236-3-1 or EN 50121-3-1 standards, it is mandatory to measure ...

    • Immunity of power line communications (PLC) in disturbed networks 

      Vallbe, Bernat; Balcells Sendra, Josep; Bogónez Franco, Francisco; Mata Diaz, Jorge; Gago Barrio, Javier (2011)
      Text en actes de congrés
      Accés obert
      This paper presents an analysis of electromagnetic immunity of energy metering devices, using broadband power line communications (PLC) in low voltage (LV) supply networks with high levels of disturbance. Several tests ...

    • Improved electromagnetic compatibility standards for the interconnected wireless world 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (2019)
      Text en actes de congrés
      Accés obert
      The future is wireless, a world where everything is interconnected. However, the current standards for ensuring the electromagnetic compatibility (EMC) and the coexistence of such wireless systems urge for a major update. ...

    • Interference Impact in WLAN Performance Evaluation 

      Serra Perramon, Enric (Universitat Politècnica de Catalunya, 2017-10-19)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Technische Universität Wien
      The main objective of this document is to develop a model and study the impact of the interference produced by microwave ovens into the widely deployed Wi-Fi networks in residential places. We study the interference of a ...

    • Interleaving and switching pattern modulation to conducted EMI reduction 

      Mon González, Juan; González Díez, David; Gago Barrio, Javier; Balcells Sendra, Josep; Bogónez Franco, Francisco (2012)
      Text en actes de congrés
      Accés obert
      This paper explores new techniques to reduce the conducted EMI generated by switched power converters operating in multiconverter arrangement. These techniques are based in the combined application of interleaving and ...

    • Measurement and evaluation techniques to estimate the degradation produced by the radiated transients interference to the GSM system 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (2015-12)
      Article
      Accés obert

    • Measuring receiver benchmark for conducted and radiated emissions testing in space applications 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Solé Lloveras, Jordi; Zhao, Dongsheng; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Text en actes de congrés
      Accés obert
      This paper compares the measurement results obtained from three different implementations of measuring receivers regarding spectral level accuracy. The objective is to validate the suitability of direct sampling electromagnetic ...

    • Numerical assessment in aeronautics for electromagnetic environmental effects 

      Ruiz-Cabello Nuñez, Miguel David; Fernández Romero, Sergio; Pous Solà, Marc; Silva Martínez, Fernando; Fernández Chimeno, Mireya; Riu Costa, Pere Joan; Jauregui Telleria, Ricardo Ignacio (2018-01-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Electromagnetic Compatibility for Space Systems Design is a critical scholarly resource that examines the applications of electromagnetic compatibility and electromagnetic interference in the space industry. Featuring ...

    • On the performance of LTE UL power control in realistic conditions 

      Lema Rosas, María Ángel; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (Springer, 2013-05-07)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper deals with the interference control in the uplink (UL) of Long Term Evolution (LTE) systems. Although the multiple access technique allows an almost null intra-cell interference, the system is still sensitive ...

    • P-Blind Interference Alignment 

      Cucurull I Martí, Anna (Universitat Politècnica de Catalunya, 2023-07-06)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Es globalmente conocido que el número de dispositivos conectados simultáneamente a una misma red está en continuo crecimiento. Para garantizar a estos usuarios una comunicación altamente fiable y de baja latencia, es crucial ...

    • Radiated transient interferences measurement procedure to evaluate digital communication systems 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a measurement procedure to capture properly the electromagnetic fields generated by radiated transient interferences is described. Measuring this type of impulsive noise out of the measurements defined at ...

    • Recent trends in polymeric foams and porous structures for electromagnetic interference shielding applications 

      Antunes, Marcelo de Sousa Pais (Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-09)
      Article
      Accés obert
      Polymer-based (nano)composite foams containing conductive (nano)fillers limit electromagnetic interference (EMI) pollution, and have been shown to act as good shielding materials in electronic devices. However, due to their ...

    • Reduction of EMI by Combining Interleaving and Modulation Techniques in Multiconverter Topology 

      Mon González, Juan; Gago Barrio, Javier; González Díez, David; Balcells Sendra, Josep; Fernández García, Raúl; Gil Galí, Ignacio (2009)
      Text en actes de congrés
      Accés obert
      In this paper an evaluation of different modulations techniques that combine switching frequency modulation and interleaving is presented. The objective of these modulations is to cancel certain harmonics of EMI and to ...

    • RFI monitoring payload for the 5G 26 GHz band for a PoquetQube 

      Gràcia I Solà, Guillem (Universitat Politècnica de Catalunya, 2023-02-07)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Due to the recent licensing of the bands for the new 26 GHz 5G communications band, which ranges from 24.25 GHz up to 25.25 GHz, there is a rising concern that spurious emissions from the 5G communications could interfere ...