Ara es mostren els items 251-254 de 254

    • Variable capacitive antenna loading for embedded RFID sensors 

      Gonzalez, Giselle; Jofre Roca, Lluís; Romeu Robert, Jordi; Cairó Molins, Josep Ignasi (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a self-adaptive folded dipole antenna to work embedded in media with changing physical and chemical properties for RFID applications is proposed. Self-adaptability is provided by taking advantage of the ...
    • W-band radiometric imager with mechanical beam-scanning 

      Nova, Enrique; Abril, Jordi; Romeu Robert, Jordi; Broquetas Ibars, Antoni; Torres Torres, Francisco; Jofre Roca, Lluís (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The design of a 94 GHz Total Power Radiometer system for imaging purposes is presented in this paper. A mechanical beam-scanning antenna system is used to acquire passive raster images. The main performance parameters ...
    • Wireless sensing of concrete setting process 

      González López, Giselle; Romeu Robert, Jordi; Cairó, Ignasi; Segura Pérez, Ignacio; Ikumi Montserrat, Tai; Jofre Roca, Lluís (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
      Article
      Accés obert
      An RFID-based wireless system to measure the evolution of the setting process of cement-based materials is presented in this paper. The system consists of a wireless RFID temperature sensor that works embedded in concrete, ...
    • X-parameters based characterization of PIN diodes for reconfigurable antenna assessment 

      Ramírez Arroyave, Germán Augusto; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís; Jofre Roca, Lluís (Íñigo Cuiñas Gómez, 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This contribution presents the non-linear characterization up to 50 GHz of a PIN diode commonly used as switch for reconfigurable devices at microwave applications. Non-linear models are extracted by means of X-parameter ...