Exploració per tema "UHF antennas"

Ara es mostren els items 2-5 de 5

    • Dual-band Sierpinski fractal monopole antenna 

      Romeu Robert, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      A new top-loaded reduced-sized dual-band (1.9 GHz and 3.5 GHz) monopole antenna for wireless communications is presented. The antenna provides better than -15 dB input return loss and keeps the same radiation pattern over ...

    • GA design of wire pre-fractal antennas and comparison with other Euclidean geometries 

      Fernández Pantoja, Mario; García Ruíz, Francisco Javier; Rubio Bretones, Amelia C.; Gómez Martín, Rafael A.; González Arbesú, José María; Romeu Robert, Jordi; Rius Casals, Juan Manuel (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-11-30)
      Article
      Accés obert
      A multi-objective genetic algorithm (GA) has been applied in conjunction with the numerical electromagnetic code (NEC) to the optimization of wire pre-fractal Koch-like antennas in terms of bandwidth, efficiency, and ...

    • Reduction of the model noise in non-linear reconstruction via an efficient calculation of the incident field: application to a 434 MHz Scanner 

      Geffrin, J M; Mallorquí Franquet, Jordi Joan; Joachimowicz, N; Redondo, R; Vall·Llossera, M; Vall-Llossera Ferran, Mercedes Magdalena; Franza, Joisel A; Bolomey, Jean Charles (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      Microwave tomography has been drastically boosted by the development of efficient reconstruction algorithms based on an iterative solution of the corresponding non-linear inverse problem. The accuracy of the electric field ...

    • RF MEMS reconfigurable two-band antenna 

      Zohur, Abdul; Mopidevi, Hema Swaroop; Rodrigo López, Daniel; Unlu, M.; Jofre Roca, Lluís; Cetiner, Bedri Artug (2013-01-09)
      Article
      Accés restringit per política de l'editorial