Exploració per autor "Díaz Tapia, Edgar"

Ara es mostren els items 1-3 de 3

    • Design of isofrequency reconfigurable repeaters 

      Díaz Tapia, Edgar (Universitat Politècnica de Catalunya, 2013-10-28)
      Tesi
      Accés obert
      The advances in the communications systems has brought new requirements and challenges in terms of compactness and efficient systems that looking for increase the signal coverage area. The reconfigurable antennas are a ...

    • Isofrequency-reconfigurable 8-bit RF repeater 

      Díaz Tapia, Edgar; Grau, Alfred; Rodriguez De Luis, Javier; de Flaviis, Franco; Jofre Roca, Lluís (2011-11-02)
      Article
      Accés restringit per política de l'editorial
      A novel isofrequency-reconfigurable RF repeater operating at 4.5 GHz is presented. The repeater uses a total of eight reconfigurable parasitic dipole elements to enhance and reconfigure the isolation level between the ...

    • Reconfigurable pixel-layer isolator for frequency-tunable on-frequency repeaters 

      Rodrigo López, Daniel; Díaz Tapia, Edgar; Jofre Roca, Lluís (2014)
      Article
      Accés restringit per política de l'editorial
      The maximum gain in on-frequency repeaters is limited by the isolation level between their two antennas due to close-loop stability conditions. In this letter, a novel pixel-layer isolator for tunable on-frequency repeaters ...