Now showing items 15-21 of 21

  • Quantitative images of large biological bodies in microwave tomography by using numerical and real data 

    Mallorquí Franquet, Jordi Joan; Joachimowicz, N.; Broquetas Ibars, Antoni; Bolomey, J. C. (Jean-Charles) (IEE-INST ELEC ENG, 1996-11-01)
    Article
    Open Access
    A new inverse microwave imaging algorithm is presented which has the ability to obtain quantitative dielectric maps of large biological bodies. By using a priori information, obtained with a first order algorithm, the final ...
  • Second-order parameter estimation 

    Villares Piera, Nemesio J.; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-07-31)
    Article
    Open Access
    This work provides a general framework for the design of second-order blind estimators without adopting any approximation about the observation statistics or the a priori distribution of the parameters. The proposed ...
  • Self-similar prefractal frequency selective surfaces for multiband and dual-polarized applications 

    Gianvittorio, John P.; Romeu Robert, Jordi; Blanch Boris, Sebastián; Rahmat-Samii, Yahya (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-01-31)
    Article
    Open Access
    Frequency-selective surfaces (FSS) that have been designed using the iterative techniques of fractals have been fabricated and measured. Fractals contain many scales of the starting geometry, each of which acts as a ...
  • Spectral iterative algorithm for RCS computation in electrically large or intermediate perfectly conducting cavities 

    Rius Casals, Juan Manuel; Lozano Solsona, Angel; Cardama Aznar, Ángel; Jofre Roca, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-06-01)
    Article
    Open Access
    A novel algorithm designed to compute efficiently and accurately the high-frequency electromagnetic scattering from open-ended waveguide cavities is presented. The cavity is converted into a stepped-waveguide model so that ...
  • SSFB: a highly-efficient and scalable simulation reduction technique for SRAM yield analysis 

    Rana, Manish; Canal Corretger, Ramon (European Interactive Digital Advertising Alliance (EDAA), 2014)
    Conference report
    Restricted access - publisher's policy
    Estimating extremely low SRAM failure-probabilities by conventional Monte Carlo (MC) approach requires hundreds-of-thousands simulations making it an impractical approach. To alleviate this problem, failure-probability ...
  • The Koch monopole: a small fractal antenna 

    Puente Baliarda, Carles; Romeu Robert, Jordi; Cardama Aznar, Ángel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2000-11)
    Article
    Open Access
    Fractal objects have some unique geometrical properties. One of them is the possibility to enclose in a finite area an infinitely long curve. The resulting curve is highly convoluted being nowhere differentiable. One such ...
  • Unveiling internal evolution of parallel application computation phases 

    Servat Gelabert, Harald; Llort Sanchez, German Matías; Giménez Lucas, Judit; Huck, Kevin A.; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Conference report
    Restricted access - publisher's policy
    As access to supercomputing resources is becoming more and more commonplace, performance analysis tools are gaining importance in order to decrease the gap between the application performance and the supercomputers' peak ...