Now showing items 21-40 of 116

  • A quad-band antenna for public safety applications 

    Mopidevi, Hema Swaroop; Damgaci, T; Rodrigo López, Daniel; Jofre Roca, Lluís; Cetiner, Bedri Artug (2014-01-01)
    Article
    Restricted access - publisher's policy
    The design, fabrication, and characterization of a frequency-reconfigurable antenna for the United States Public Safety (PS) wireless communication applications are presented. This antenna is quad-band operating in the PS ...
  • A simple and effective microwave invisibility cloak based on frequency selective surfaces 

    Yuste, Pedro; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Blanch Boris, Sebastián; Heldring, Alexander; Úbeda Farré, Eduard (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Open Access
    This paper presents the design, simulation, manufacturing and testing of a simple invisibility cloak based on a frequency selective surface (FSS). The work is focused on cloaking an electrically thin dielectric cylinder ...
  • Assessment of 3-D printing technologies for millimeter-wave reflectors 

    Romeu Robert, Jordi; Blanch Boris, Sebastián; Vidal, Neus; Lopez-Villegas, Jose Maria; Aguasca Solé, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018-07-20)
    Article
    Open Access
    Three different 3D printing technologies: Stereolithography (SLA), Fused Deposition Modeling (FDM) and HP Multi Jet Fusion Technology (MJF) are compared to build a parabolic reflector operating at 100 GHz. Fabrication ...
  • Broadband triple-frequency microstrip patch radiator combining a dual-band modified Sierpinski fractal and monoband antenna 

    Anguera, Jaume; Martinez-Ortigosa, Eduard; Puente Baliarda, Carles; Borja, C.; Soler, Jordi (2006-11)
    Article
    Restricted access - publisher's policy
    Abstract—A triple-frequency antenna combining a dual-band and a monoband antenna with broadside radiation patterns is presented. The dual-band antenna is inspired in the Sierpinski fractal. Such a dual-band antenna is ...
  • Characterization and evaluation of human liver Phantoms for normal and malignant tissue 

    Alonso Rincón, Elena (Universitat Politècnica de Catalunya, 2016-05-12)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Covenantee:  Technische Universität Darmstadt
  • Characterization of reconfigurable antennas in real Wifi environments 

    Castellanos de Rojas, Adrian (Universitat Politècnica de Catalunya, 2015-02-03)
    Bachelor thesis
    Open Access
    [ANGLÈS] The purpose of this project is to characterize two reconfigurable microstrip antennas at 5 GHz against the common Wifi monopole, by measuring them in real Wifi environments. From the measurements, conclusions on ...
  • Closed-loop spatial modulation with antenna selection 

    Wang, Jun-ling; Pérez Neira, Ana Isabel; Zhang, Q.; Meiguo, Gao; Xiaoyan, Bian (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    The closed-loop scheme of spatial modulation (SM), which feeds back the selected transmit antenna subsets to the transmitter, is presented to overcome the constraint in SM that the number of transmit antennas has to be a ...
  • Compact closed-form expressions for the propagation parameters of a finite ground width coplanar transmission waveguide with thick electrodes 

    Ibarra Fusté, Jose Antonio; Santos Blanco, M. Concepción; Rodríguez Rodríguez, Enric (2012-02-21)
    Article
    Restricted access - publisher's policy
    Compact closed-form mathematical expressions are presented for the effective permittivity, characteristic impedance and attenuation constant of coplanar waveguides with thick electrodes and high-frequency dispersion. ...
  • Compact multiband antenna system for smartphone platforms 

    Anguera Pros, Jaume; Picher, Cristina; Andújar Linares, Aurora; Puente Baliarda, Carles; Kahng, Sungtek (2013)
    Conference report
    Restricted access - publisher's policy
    Smartphone are gainin interest due to its multifunctional capabilities. In order to facilitate the integration of an antenna system, a compact radiating system comprising non-resonant cubic elements radiating to provide ...
  • Computing and communications for the software-defined metamaterial paradigm: a context analysis 

    Abadal Cavallé, Sergi; Liaskos, Christos; Tsioliaridou, Ageliki; Ioannidis, Sotiris; Pitsillides, Andreas; Solé Pareta, Josep; Alarcón Gallo, Eduardo; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2017-01-01)
    Article
    Open Access
    Metamaterials are artificial structures that have recently enabled the realization of novel electromagnetic components with engineered and even unnatural functionalities. Existing metamaterials are specifically designed ...
  • Conformación del diagrama de radiación de un monopolo en L 

    Andújar Linares, Aurora; Anguera Pros, Jaume; Puente Baliarda, Carles; Picher, Cristina (Unión Científica Internacional de Radio (URSI), 2009)
    Conference report
    Open Access
    The typical radiation pattern of an L-monopole antenna can be easily modified by changing the geometrical characteristics of the structure. To shape a specific radiation pattern through a basic structure becomes an interesting ...
  • Correlated multiple antennas spectrum sensing under calibration uncertainty 

    Pourgharehkhan, Zahra; Taherpour, Abbas; Sala Álvarez, José; Khattab, Tamer (2015-12-01)
    Article
    Open Access
    We address the problem of spectrum sensing in cognitive radios (CRs) when the secondary user (SU) is equipped with a multiantenna receiver. We consider scenarios with correlation between the received channels at different ...
  • CPW balun for printed balanced antennas 

    Sanchez, Albert Miquel; Ribó, Miquel; Pradell i Cara, Lluís; Anguera Pros, Jaume; Andujar, Aurora (Institution of Electrical Engineers, 2014-05-22)
    Article
    Restricted access - publisher's policy
    In coplanar waveguide (CPW) circuits, printed balanced antennas must be excited through baluns. These baluns often feature coplanar-to-slotline transitions that must be tuned and matched by electromagnetic optimisation, ...
  • Design a MIMO solution for 4G applications with Virtual Antenna™ Technology 

    Oliva, Marc (Universitat Politècnica de Catalunya, 2018-07)
    Bachelor thesis
    Restricted access - author's decision
    With the antenna provided by the company, design a MIMO solution for 4G applications in a platform with similar dimensions of current mobile phones.
  • Design and evaluation of an antenna applicator for a microwave colonoscopy system 

    Guardiola, Marta; Djafri, Kahina; Challal, Mouloud; González Ballester, Miguel A.; Fernández-Esparrach, Glòria; Camara, Oscar; Romeu Robert, Jordi (2019-08-01)
    Article
    Open Access
    This paper presents a design of a compact antenna applicator for a microwave colonoscopy system. Although colonoscopy is the most effective method for colorectal cancer detection, it suffers from important visualization ...
  • Design and performance evaluation of a switched-beam antenna array for 60 GHz WPAN applications 

    Imbert Villà, Marc; Papió Toda, Anna; de Flaviis, Franco; Jofre Roca, Lluís; Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    In this paper, the design and performance evaluation of a switched-beam antenna array to operate in the 60 GHz band for short-range WPAN applications is presented. In order to overcome the high path-loss attenuation at ...
  • Design of ground station antenna for a double CubeSat student project 

    Oliver Miranda, Mireia (Universitat Politècnica de Catalunya, 2007-10-17)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] This thesis is a part of the Student Satellite program at NTNU in the CubeSat program. Previously some initial work has been done about the satellite design, and this thesis is going to begin the ground station ...
  • Design of the magnetic diagnostics unit onboard LISA Pathfinder 

    Díaz Aguiló, Marc; Mateos, Ignacio; Ramos Castro, Juan José; Lobo, J.A.; García-Berro Montilla, Enrique (2013-04)
    Article
    Open Access
    LISA (Laser Interferometer Space Antenna) is a joint mission of ESA and NASA which aims to be the first space-borne gravitational wave observatory. Due to the high complexity and technological challenges that LISA will ...
  • Diagnóstico de arrays. Estudio comparativo entre campo próximo rectangular y cilíndrico 

    Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís (Unión Científica Internacional de Radio (URSI), 1990)
    Conference report
    Open Access
  • Dimensionality constraints imposed by highly frequency selective channels on MIMO-FBMC / OQAM systems 

    Pérez Neira, Ana Isabel; Caus, Marius (VDE Conference Publications, 2015)
    Conference report
    Restricted access - publisher's policy
    This paper investigates the application of MIMO to the FBMC/OQAM scheme in highly frequency selective channels. The system model that is considered in this work does not make any assumption about the flatness of the channel. ...