Exploració per tema "Beam steering"

Ara es mostren els items 1-13 de 13

    • A 3D printed lens antenna for 5G applications 

      Ballesteros, Christian; Maestre, Marcos; Santos Blanco, M. Concepción; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés obert
      A switchable multi-antenna architecture for lens-assisted beamsteering in the Ka-band region allocated for 5G communications (24-30 GHz) is proposed. The radiating elements are bow-tie antennas mounted with a 3D printed ...

    • A reconfigurable antenna with beam steering and beamwidth variability for wireless communications 

      Towfiq, Asaduzzaman; Bahceci, Israfil; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís; Cetiner, Bedri Artug (2018-07-12)
      Article
      Accés obert
      A reconfigurable antenna (RA) capable of steering its beam into the hemisphere corresponding to ¿ ¿ {-40°,0°,40°}, Ø ¿ {0°,45°,90°,-45°}, and of changing 3-dB beamwidth, where ¿3dB ¿ (40°,100°), Ø ¿ {45°,90°,-45°} for ...

    • Dielectric flat lenses with cylindrically distributed parameters for millimeter-wave applications 

      Imbert, M.; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The design and performance evaluation of an inhomogeneous dielectric flat lens with the effective relative permittivity cylindrically distributed is presented. In order to achieve high-data rate wireless communications for ...

    • Digital metasurface based on graphene: An application to beam steering in terahertz plasmonic antennas 

      Hosseininejad, Seyed Ehsan; Rouhi, Kasra; Neshat, Mohammad; Cabellos Aparicio, Alberto; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José (2019-06-25)
      Article
      Accés obert
      Metasurfaces, the two-dimensional counterpart of metamaterials, have caught great attention thanks to their powerful capabilities on manipulation of electromagnetic waves. Recent times have seen the emergence of a variety ...

    • Extremum seeking control for beam steering using hypersurfaces 

      Ashraf, Nouman; Lestas, Marios; Saeed, Taqwa; Taghvaee, Hamidreza; Abadal Cavallé, Sergi; Pitsillides, Andreas; Liaskos, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés obert
      Hypersurface, a software defined metasurface (SDM) paradigm constitutes a revolutionary technology aiming at offering programmatic control over all aspects of a propagating wave, altering its direction, power, polarization ...

    • Fault tolerance in programmable metasurfaces: the beam steering case 

      Taghvaee, Hamidreza; Abadal Cavallé, Sergi; Georgiou, Julius; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      Metasurfaces, the two-dimensional counterpart of metamaterials, have caught great attention thanks to their powerful control over electromagnetic waves. Recent times have seen the emergence of a variety of metasurfaces ...

    • Intelligent beam steering for wireless communication using programmable metasurfaces 

      Ashraf, Nouman; Saeed, Taqwa; Taghvaee, Hamidreza; Abadal Cavallé, Sergi; Vassiliou, Vasos; Liaskos, Christos; Pitsillides, Andreas; Lestas, Marios (Institute of Electrical and Electronics Engineers (IEEE), 2023-05)
      Article
      Accés obert
      Reconfigurable Intelligent Surfaces (RIS) are well established as a promising solution to the blockage problem in millimeter-wave (mm-wave) and terahertz (THz) communications, envisioned to serve demanding networking ...

    • Ku-band flat lens design for satellite TV applications 

      Imbert Villà, Marc; Romeu Robert, Jordi; Jofre Roca, Lluís; Papió, Anna; de Flaviis, Franco (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, the design of a dielectric flat lens to operate in the Ku-band for satellite communications is presented. Modern dishes intended for home television are generally bulky and heavy. Moreover, the costs of ...

    • LTCC-based dielectric flat lens performance evaluation at 94 GHz 

      Imbert Villà, Marc; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís; Baquero Escudero, M. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The design and performance evaluation of an inhomogeneous LTCC-based dielectric flat lens at 94 GHz is presented. A previously introduced dielectric flat lens design with its effective permittivity (r) circularly distributed ...

    • Parasitic layer-based reconfigurable antenna design by multi-objective optimization 

      Yuan, Xiaoyan; Li, Zhouyuan; Rodrigo López, Daniel; Mopidevi, Hema Swaroop; Kaynar, Oguz; Jofre Roca, Lluís; Cetiner, Bedri Artug (2012-06)
      Article
      Accés restringit per política de l'editorial
      A parasitic layer-based multifunctional reconfigurable antenna (MRA) design based on multi-objective genetic algorithm optimization used in conjunction with full-wave EM analysis is presented. TheMRA is capable of ...

    • Radiation pattern prediction for metasurfaces: A neural network-based approach 

      Taghvaee, Hamidreza; Jain, Akshay; Timoneda i Comas, Xavier; Liaskos, Christos; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-14)
      Article
      Accés obert
      As the current standardization for the 5G networks nears completion, work towards understanding the potential technologies for the 6G wireless networks is already underway. One of these potential technologies for the 6G ...

    • Scalability analysis of programmable metasurfaces for beam steering 

      Taghvaee, Hamidreza; Abadal Cavallé, Sergi; Pitilakis, Alexandros; Tsilipakos, Odysseas; Tasolamprou, Anna; Liaskos, Christos; Kafesaki, Maria; Kantartzis, Nikolaos V.; Cabellos Aparicio, Alberto; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-01)
      Article
      Accés obert
      Programmable metasurfaces have garnered significant attention as they confer unprecedented control over the electromagnetic (EM) response of any surface. Such feature has given rise to novel design paradigms such as ...

    • Unit cell for frequency-tunable beamscanning reflectarrays 

      Rodrigo López, Daniel; Jofre Roca, Lluís; Perruisseau Carrier, Julien (2013-12)
      Article
      Accés restringit per política de l'editorial
      A reflectarray cell able to dynamically control the reflection phase at a variable frequency is presented. This capability enables beam-scanning reflectarrays with frequency reconfigurability, which is a novel capability ...