Now showing items 1-7 of 7

    • Latest research on long-range Brillouin distributed sensing 

      Loayssa Lara, Alayn Upna; Urricelqui Polvorinos, Javier Upna; Iribas Pardo, Haritz Upna; Mariñelarena Ollacarizqueta, Jon Upna; Mompó Roselló, Juan José Upna (SPIE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      We review the latest developments in long-range Brillouin optical time-domain analysis sensors. The factors that impair the performance of these sensors, particularly in terms of their distance range, are discussed together ...
    • Folded Cascode OTA with 5540 MHzpF/mA FoM 

      Garde Luque, María Pilar; López Martín, Antonio Upna; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A micropower single-stage folded cascode amplifier able to drive a wide range of capacitive loads is presented. It features class AB operation and includes power-efficient adaptive biasing techniques, which provide enhanced ...
    • On the optimal current followers for wide-swing current-efficient amplifiers 

      López Martín, Antonio Upna; Garde Luque, María Pilar; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The design of various current followers for the implementation of OTAs with high slew rate and current efficiency is addressed. Two basic current follower topologies are compared, and modifications of both followers to ...
    • Angle-susceptible sensing metasurface in terahertz regime 

      Nikolaev, Nazar A.; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna (EDP Sciences, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Nowadays thin-film coatings and structures are widely used in advanced industrial and scientific ap-plications that makes the tasks of thin-film sensing highly demanded in practice. Last decade, stimulated by progress in ...
    • Study on antenna mutual coupling suppression using integrated metasurface isolator for SAR and MIMO applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Andujar, A.; Anguera, J.; Limiti, Ernesto (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena
      A metasurface based decoupling structure that is composed of a square-wave slot pattern with exaggerated corners that is implemented on a rectangular microstrip provides high-isolation between adjacent patch antennas for ...
    • Mutual-coupling reduction in metamaterial substrate integrated waveguide slotted antenna arrays using metal fence isolators for SAR and MIMO applications 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier Upna; Limiti, Ernesto (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena
      A new type of mutual coupling reduction technique is applied to metamaterial substrate integrated waveguide (SIW) slotted antenna array. The circular shaped reference SIW antenna array is constructed from Alumina substrate ...
    • A new waveguide slot array antenna with high isolation and high antenna bandwidth operation on Ku- and K- Bands for radar and MIMO systems 

      Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Limiti, Ernesto; Falcone Lanas, Francisco Javier Upna (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper a novel technique is proposed to reduce the mutual coupling between the radiating elements of a waveguide slot array antenna. This is achieved by inserting slots between the waveguide oval shaped slots. The ...