Now showing items 1-12 of 334

    • Low-Profile UWB probe for precise time-domain functional imaging 

      Akazzim, Youness; El Mrabet, Otman; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2023)
      Conference lecture
      Restricted access - publisher's policy
      In this paper a Double Ridge Waveguide (DRW) antenna fed by a microstrip line covering a frequency band from 0.5GHz to 2.5GHz is designed, fabricated, and measured, for functional microwave imaging. The proposed DRW antenna ...
    • Microwave-microfluidic measurement system optimization for bio-particle-sensing with coplanar-electrodes 

      Palacios Arias, César Augusto; Jofre Cruanyes, Marc; Jofre Cruanyes, Lluís; Trabal Pou, Arnau; Coll Beltran, Mercè; Rodríguez Gargallo, Marta; Romeu Robert, Jordi; Jofre Roca, Lluís (Íñigo Cuiñas Gómez, 2021)
      Conference report
      Restricted access - publisher's policy
      Microwave and microfluidic techniques may enable wireless monitoring and interaction with bio-particles, yet still is a largely uncharted territory. Fortunately, the requirements of microfluidics and microwave techniques ...
    • Preliminary phantom-based dynamic calibration techniques assessment for microwave colonoscopy systems 

      Garrido Atienza, Alejandra; Dghoughi, Walid; Romeu Robert, Jordi; Guardiola Garcia, Marta (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Conference lecture
      Open Access
      Early detection and resection of colon polyp is the best way to reduce colorectal cancer (CRC) mortality. The current method for early detection is colonoscopy, which has a limited field of view, and its efficacy is highly ...
    • In-cabin 120 GHz radar system for functional human breathing monitoring in a 3D scenario 

      López Montero, María José; Aguasca Solé, Alberto; Romeu Robert, Jordi; Jofre Roca, Lluís (Íñigo Cuiñas Gómez, 2021)
      Conference report
      Open Access
      Driving is one of the activities that takes a significant part of a person’s time, that is why monitoring vital signs is useful for the wellness of the occupants of the vehicle. One of the vital signs that provides more ...
    • Experimental exploration of longitudinal modes in spherical shells at 220 GHz – 330 GHz: applications to corneal sensing 

      Zarrinkhat, Faezeh; Lamberg, Joel; Baggio, Mariangela; Tamminen, Aleksi; Ala-Laurinaho, Juha; Khaled, Elsayed E. M.; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Taylor, Zachary (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Restricted access - publisher's policy
      Submillimeter-wave and THz sensing of cornea leverage the layered tissue structure for assessments of corneal water content and thickness. The cornea is bounded by air on the anterior and an optically thick body of water ...
    • Efficient analysis of sheets with nonzero thickness 

      Úbeda Farré, Eduard; Rius Casals, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference lecture
      Open Access
      The conventional scattering analysis of perfectly conducting plates neglects the scattering contribution of the rim in the discretization of the Electric-Field Integral Equation. This so-called thin-plate scheme manages ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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 ...
    • Efficient analysis of thick curved metal sheets 

      Úbeda Farré, Eduard; Rius Casals, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      The scattering analysis of perfectly conducting plates with the method-of-moment discretization of the Electric-Field Integral Equation has been traditionally carried out according to the thin-sheet approximation, which ...
    • Fourier analysis of submillimeter-wave scattering from the human cornea 

      Zarrinkhat, Faezeh; Lamberg, Joel; Tamminen, Aleksi; Baggio, Mariangela; Ala-Laurinaho, Juha; Khaled, Elsayed E. M.; Rius Casals, Juan Manuel; Romeu Robert, Jordi; Taylor, Zachary (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      Wave scattering from a human cornea illuminated with a submillimeter-wave Gaussian beam is explored with Fourier analysis. This new approach enabled us to investigate the cornea as a coated sphere rather than a homogenized ...
    • An UWB Tapered Slot Vivaldi Antenna (TSA) with improved characterestics 

      Akazzim, Youness; Kanjaa, Mohammed; El Mrabet, Otman; Jofre Roca, Lluís; Essaaidi, Mohamed (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference lecture
      Restricted access - publisher's policy
      In this paper, an UWB Tapered Slot Vivaldi Antenna (TSA) is presented. The proposed TSA is optimized in order to increase the bandwidth and ensure a good impedance matching at low and bandwidth frequencies while respecting ...
    • Millimeter-wave MIMO array measurement system for imaging and channel characterization 

      Ballesteros Sánchez, Christian; Montero Bayo, Luca; Ramírez Arroyave, Germán Augusto; Dagatti, Mayco; Solano Pérez, José Antonio; Molina García-Pardo, José María; Romeu Robert, Jordi; Jofre Roca, Lluís (Universidad de Málaga, 2020)
      Conference lecture
      Restricted access - publisher's policy
      Millimeter-wave band offer unique characteristicsto obtain good spatial position and resolution of certain type oftargets. The aim of this paper is to study a near-field focusingtechnique applied to the ...
    • Characterization of THz radiation by collimated wavefront aperture raster scanning 

      Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción; Gomez Diaz, J. Sebastian; Romeu Robert, Jordi; Jofre Roca, Lluís (Universidad de Málaga, 2020)
      Conference report
      Open Access
      We present measurements for characterization of the beam profile and polarization pattern of lens-coupled photoconductive antennas (PCAs) at THz frequencies using a setup with antennas at fixed positions and a movable ...