Recent Submissions

  • Characterisation of copper and stainless steel surfaces treated with laser ablation surface engineering 

    Hannah, Adrian N.; Krkotic, Patrick; Valizadeh, Reza; Malyshev, Oleg; Mutch, J.; Whitehead, David J.; Pont, Montse; O'Callaghan Castellà, Juan Manuel; Dhanak, Vinod R. (2021-07)
    Article
    Restricted access - publisher's policy
    In the past few years, it has been established that Laser Ablation Surface Engineering (LASE) is a very effective way of producing surfaces which have Secondary Electron Yields (SEY)¿<¿1. This can be achieved with a variety ...
  • Optical phase effects in reconfigurable microwave photonic filters with multiple wavelength input 

    Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción (2021-11)
    Article
    Open Access
    Microwave photonic filters with a multiple wavelength input are analyzed. A comprehensive model assessing the impact of the phase characteristic of the optical stage is presented from which optimized design rules have been ...
  • Algorithm for resonator parameter extraction from symmetrical and asymmetrical transmission responses 

    Krkotic, Patrick; Gallardo Moix, Queralt; Tagdulang, Nikki; Pont Montaner, Montserrat; O'Callaghan Castellà, Juan Manuel (IEEE Microwave Theory and Techniques Society, 2021-06-07)
    Article
    Open Access
    We describe an algorithm capable of extracting the unloaded quality factor and the resonant frequency of microwave resonators from vector S-parameters. Both symmetrical (Lorentzian) and asymmetrical (Fano) transmission ...
  • Mixed integration of CDIO skills into telecommunication engineering curricula 

    Sayrol Clols, Elisa; Bragós Bardia, Ramon; Alarcón Cot, Eduardo José; Cabrera-Bean, Margarita; Calveras Augé, Anna M.; Comellas Colomé, Jaume; O'Callaghan Castellà, Juan Manuel; Pegueroles Vallés, Josep R.; Pla, Enrique; Prat Viñas, Lluís; Sáez Moreno, Germán; Sardà Ferrer, Joan; Tallon Montoro, Carme (2010)
    Article
    Open Access
    Spain has been intensively involved in designing engineering curricula for the last two years and next academic year all engineering schools will be deploying all bachelor programs adapted to the EHEA and to the Spanish ...
  • SMOS third mission reprocessing after 10 years in orbit 

    Oliva Balagué, Roger; Martín Neira, Manuel; Corbella Sanahuja, Ignasi; Closa Soteras, Josep; Zurita Campos, Alberto Manuel; Cabot, François; Khazaal, Ali; Richaume, Philippe; Kainulainen, Juha; Barbosa, José; Lopes, Gonçalo; Tenerelli, Joseph; Díez García, Raúl; González Gambau, Verónica; Crapolicchio, Raffaele (Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
    Article
    Open Access
    After more than 10 years in orbit, the SMOS team has started a new reprocessing campaign for the SMOS measurements, which includes the changes in calibration and image reconstruction that have been made to the Level 1 ...
  • High-efficiency reconfigurable dual-band class-F power amplifier with harmonic control network using MEMS 

    Gilasgar, Mitra; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís (2020-07-01)
    Article
    Open Access
    This letter presents a novel reconfigurable, high-efficiency class-F power amplifier (PA) structure, using a commercial GaN-HEMT, that achieves dual-band configuration not only at the fundamental frequency but also at the ...
  • High frequency response of thick REBCO coated conductors in the framework of the FCC study 

    Romanov, Artur; Krkotic, Patrick; Telles, Guilherme; O'Callaghan Castellà, Juan Manuel; Pont, Montse; Pérez, Francis; Granados García, Xavier; Calatroni, Sergio; Puig Molina, Teresa; Gutiérrez Royo, Joffre (Nature, 2020-07-23)
    Article
    Open Access
    A thorough microwave response study of high temperature superconductors, considered as an alternative beam screen coating, has become integral in the design decisions for CERN’s future research infrastructure. Here, we ...
  • One-point microwave radiometer calibration 

    Corbella Sanahuja, Ignasi; Torres Torres, Francisco; Closa Soteras, Josep; Duffo Ubeda, Núria; Durán Martínez, Israel; González Gambau, Verónica; Martín Neira, Manuel (2020-03-01)
    Article
    Open Access
    A method for internally calibrating microwave total power radiometers by using only one level of noise injection is presented. It is based on having a previous accurate characterization of the receiver noise temperature, ...
  • Miniature switchable millimeter-wave BiCMOS low-noise amplifier at 120/140 GHz using an HBT switch 

    Heredia, F.-Javier (Francisco Javier); Ribó Pal, Miquel; Pradell i Cara, Lluís; Wipf, Selin Tolunay; Göritz, Alexander; Wietstruck, Matthias; Wipf, Christian; Kaynak, Mehmet (2019-10-01)
    Article
    Open Access
    A 120–140 GHz frequency-switchable, very compact low-noise amplifier (LNA) fabricated in a 0.13 µm SiGe:C BiCMOS technology is proposed. A single radio-frequency (RF) switch composed of three parallel hetero junction bipolar ...
  • HE-LHC: the High-Energy Large Hadron Collider: Future Circular Collider Conceptual Design Report Volume 4 

    Abada, A.; Abbrescia, M.; AbdusSalam, S. S.; O'Callaghan Castellà, Juan Manuel; Krkotic, Patrick (Springer, 2019-07-01)
    Article
    Open Access
    In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered ...
  • Contactless electrical resistance of 2D materials using a rutile resonator 

    Arcos Gutiérrez, David; Krkotic, Patrick; O'Callaghan Castellà, Juan Manuel; Pont, Montse; Ametller Congost, Lluís; Ferrer Anglada, Núria (2019-12-12)
    Article
    Open Access
    Measuring the electrical surface resistance of 2D materials without contact can provide a method for obtaining their intrinsic characterisation. The aim of this paper is to show that a rutile dielectric resonator (RDR) can ...
  • Resonance-Based microwave technique for body implant sensing 

    González López, Giselle; Jofre Roca, Lluís; Amorós García de Valdecasas, Susana; Rodríguez Leor, Oriol; Gálvez Montón, Carolina; Bayés Genis, Antoni; O'Callaghan Castellà, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2019-11-03)
    Article
    Open Access
    There is an increasing need for safe and simple techniques for sensing devices and prostheses implanted inside the human body. Microwave wireless inspection may be an appropriate technique for it. The implanted device may ...

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