Enviaments recents

  • A 2.4 GHz CMOS class-F power amplifier with reconfigurable load-impedance matching 

    Gilasgar, Mitra; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís (2019)
    Article
    Accés restringit per política de l'editorial
    A novel reconfigurable CMOS class-F power amplifier (PA) at 2.4 GHz is proposed in this paper. It is able to match the output load variations mainly due to the effect of hand and head on a mobile phone. The effect of ...
  • Planck pre-launch status: the planck mission 

    Tauber, Jan A.; Mandolesi, Nazzareno; Pujet, J.L.; Banos, T.; Bersanelli, Marco; Bouchet, R.C.; Butler, Chris; Charra, J.; Crone, Gerald; Dodsworth, John; Efstathiou, George; Gispert, Richard; Guyot, Guy; Gregorio, A.; Juillet, J. J.; Lamarre, J. M.; Laureijs, R. J.; Lawrence, C. R.; Nørgaard-Nielsen, H. U.; Passvogel, T.; Reix, J. M.; Texier, D.; Pradell i Cara, Lluís; Vibert, L.; Zacchei, A.; Ade, P.A.R; Aghanim, N.; Aja Abelán, Beatriz; Alippi, E.; Aloy, L.; Armand, P.; Arnaud, M.; Arondel, A.; Arreola-Villanueva, A.; Artal Latorre, Eduardo; Artina, E.; Arts, A.; Ashdown, M.; Ashdown, M.; Aumont, J.; Azzaro, M.; Bacchetta, A.; Baccigalupi, C.; Baker, M.; Balasini, M.; Balbi, A.; Banday, A.J.; Barbier, G.; Barreiro Vilas, Rita Belén; Bartelmann, M.; Battaglia, P.; Battaner, E.; Benabed, K.; Beney, J. L.; Beneyton, R.; Bennett, K.; Benoit, A.; Bernard, J. P.; Bhandari, P.; Bhatia, R.; Biggi, M.; Biggins, R.; Billig, G.; Blanc, Y.; Blavot, H.; Bock, J. J.; Bonaldi, A.; Bond, R.; Bonis, J.; Borders, J.; Borrill, J.; Boschini, L.; Boulanger, F.; Bouvier, J.; Bouzit, M.; Bowman, R.; Bréelle, E.; Bradshaw, T.; Braghin, M.; Bremer, M.; Brienza, D.; Broszkiewicz, D.; Burigana, C.; Burkhalter, M.; Cabella, P.; Cafferty, T.; Cairola, M.; Cairola, M.; Caminade, S.; Camus, P.; Cantalupo, C. M.; Cappellini, B.; Cardoso, J. F.; Carr, R.; Catalano, A.; Cayón, L.; Cesa, M.; Chaigneau, M.; Challinor, A. (EDP Sciences, 2010-09-15)
    Article
    Accés obert
    The European Space Agency's Planck satellite, launched on 14 May 2009, is the third-generation space experiment in the field of cosmic microwave background (CMB) research. It will image the anisotropies of the CMB over the ...
  • Ex vivo assessment and in vivo validation of non-invasive stent monitoring techniques based on microwave spectrometry 

    Gálvez Montón, Carolina; Arauz Garofalo, Gianluca; Rodríguez Leor, Oriol; Soler Botija, Carolina; Amorós García de Valdecasas, Susana; Bayés Genis, Antoni; O'Callaghan Castellà, Juan Manuel; Macià Bros, Ferran; Tejada Palacios, Javier (Nature, 2018-10-04)
    Article
    Accés obert
    Some conditions are well known to be directly associated with stent failure, including in-stent re-occlusion and stent fracture. Currently, identification of these high-risk conditions requires invasive and complex procedures. ...
  • Compact fully uniplanar bandstop filter based on slow-wave multimodal CPW resonators 

    Contreras Bleda, Adrián; Ribó i Pal, Miquel; Pradell i Cara, Lluís; Raynal, Víctor; Moreno, Ignacio; Combes, Maxence; Ten, Milena (2018-07-26)
    Article
    Accés obert
    In this letter, a compact, fully uniplanar bandstop filter is presented. It is based on multimodal coplanar waveguide resonators implemented using a slow-wave periodic structure that greatly reduces the filter’s horizontal ...
  • Bandgap widening in macroporous silicon photonic crystals by multiperiodic structures 

    Segura García, Daniel; Cardador Maza, David; Vega d'Aurelio, Davide; Santos Blanco, M. Concepción; Dios Otín, Víctor Federico; Rodríguez Martínez, Ángel (Institute of Physics (IOP), 2018-05-14)
    Article
    Accés obert
    Large bandgaps with low transmission in 3D macroporous silicon photonic crystals have been proved as an interesting technology for the development of optical filters and spectroscopic MIR gas sensors. The aim of this study ...
  • Dielectric properties of colon polyps, cancer, and normal mucosa: Ex vivo measurements from 0.5 to 20 GHz 

    Guardiola, Marta; Buitrago Ventura, Santiago; Fernández-Esparrach, Glòria; O'Callaghan Castellà, Juan Manuel; Romeu Robert, Jordi; Cuatrecasas, Miriam; Córdoba, Henry; González Ballester, Miguel A.; Camara, Oscar (2018-06-15)
    Article
    Accés restringit per política de l'editorial
    Colorectal cancer is highly preventable by detecting and removing polyps, which are the precursors. 20 Currently, the most accurate test is colonoscopy, but still misses 22% of polyps due to visualization limitations. In ...
  • Compact, wideband impedance tuner using a three-line-microstrip structure 

    Heredia Vega, Julio César; Ribó Pal, Miquel; Pradell i Cara, Lluís (Institution of Electrical Engineers, 2018-05-03)
    Article
    Accés obert
    A novel three-line-microstrip compact impedance tuner is presented. It is based on a multimodal structure wherein six variable capacitances, implemented with two parallel-connected varactors each, create multiple interactions ...
  • Rf interference analysis in aperture synthesis interferometric radiometers: application to l-band miras instrument 

    Camps Carmona, Adriano José; Corbella Sanahuja, Ignasi; Torres, F; Bará, J; Capdevila Vives, Joan (Institute of Electrical and Electronics Engineers (IEEE), 2000-03)
    Article
    Accés obert
    Current spaceborne radiometers do not achieve the required spatial resolution demanded by the scientific community due to antenna-size technological limitations. In recent years, several space agencies have been studying ...
  • Circuit model for mode conversion in coplanar waveguide assymmetric series-impedances 

    Ribó i Pal, Miquel; Cruz Romero, Janill Marie de la; Pradell i Cara, Lluís (Institution of Electrical Engineers, 1999-10)
    Article
    Accés obert
    A new 'circuit model' for converting between even and odd modes in asymmetric series impedances in the ground plane of a coplanar waveguide is presented. The model is based on the separation of modes into two input and two ...
  • Contaminant particle motion in lubricating grease flow: a computational fluid dynamics approach 

    Westerberg, Lars-Göran; Farré Lladós, Josep; Sarkar, Chiranjit; Casals Terré, Jasmina (2018)
    Article
    Accés obert
    In this paper, numerical simulations of particle migration in lubricating grease flow are presented. The rheology of three lithium greases with NLGI (National Lubricating Grease Institute) grades 00, 1 and 2 respectively ...
  • 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 ...
  • Dielectric properties of milk during ultra-heat treatment 

    Muñoz, Israel; Gou, Pere; Picouet, Pierre A.; Barlabe Dalmau, Antoni; Felipe, Xavier (Elsevier, 2018-02-01)
    Article
    Accés restringit per política de l'editorial
    Dielectric properties are important for predicting dielectric heating of foodstuffs. The dielectric properties of three types of milk (raw, skimmed and concentrated non-fat) were analyzed at high frequencies between 10 MHz ...

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