Now showing items 1-20 of 22

    • A new class of antenna array with a reconfigurable element factor 

      Li, Zhouyuan; Rodrigo López, Daniel; Jofre Roca, Lluís; Cetiner, Bedri Artug (2013-04)
      Article
      Restricted access - publisher's policy
      A parasitic layer-based multifunctional reconfigurable antenna array (MRAA) formed by the linear combination of four (4 1) identical multifunctional reconfigurable antenna (MRA) elements is presented. Each MRA produces ...
    • A quad-band antenna for public safety applications 

      Mopidevi, Hema Swaroop; Damgaci, T; Rodrigo López, Daniel; Jofre Roca, Lluís; Cetiner, Bedri Artug (2014-01-01)
      Article
      Restricted access - publisher's policy
      The design, fabrication, and characterization of a frequency-reconfigurable antenna for the United States Public Safety (PS) wireless communication applications are presented. This antenna is quad-band operating in the PS ...
    • 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
      Open Access
      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 ...
    • Antenna reconfigurability based on a novel parasitic pixel layer 

      Rodrigo López, Daniel; Damgaci, Yasin; Unlu, M.; Cetiner, Bedri Artug; Romeu Robert, Jordi; Jofre Roca, Lluís (2011)
      Conference report
      Restricted access - publisher's policy
      A novel reconfiguration method based in the use of pixel surfaces as parasitic elements is presented. This concept can be used to provide reconfigurability to a wide variety of non-reconfigurable antennas without requiring ...
    • Circular beam-steering reconfigurable antenna with liquid metal parasitics 

      Rodrigo López, Daniel; Jofre Roca, Lluís; Cetiner, Bedri Artug (2012-04)
      Article
      Restricted access - publisher's policy
      A novel antenna reconfiguration mechanism based on the displacement of liquid metal sections is presented. The liquid nature of the moving parts of the antenna helps avoid the main disadvantage of mechanically-actuated ...
    • Design of minimum nonlinear distortion reconfigurable antennas for next-generation communication systems 

      Ramírez Arroyave, Germán Augusto; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís; Araque Araque, Javier Leonardo; Cetiner, Bedri Artug; Jofre Roca, Lluís (Multidisciplinary Digital Publishing Institute (MDPI), 2022-03-01)
      Part of book or chapter of book
      Open Access
      Nonlinear effects in the radio front-end can degrade communication quality and system performance. In this paper we present a new design technique for reconfigurable antennas that minimizes the nonlinear distortion and ...
    • Design of minimum nonlinear distortion reconfigurable antennas for next-generation communication systems 

      Ramírez Arroyave, Germán Augusto; Barlabe Dalmau, Antoni; Pradell i Cara, Lluís; Araque Araque, Javier Leonardo; Cetiner, Bedri Artug; Jofre Roca, Lluís (2021-04-01)
      Article
      Open Access
      Nonlinear effects in the radio front-end can degrade communication quality and system performance. In this paper we present a new design technique for reconfigurable antennas that minimizes the nonlinear distortion and ...
    • Error vector magnitude, intermodulation and radiation characteristics of a bandwidth and pattern reconfigurable antenna 

      Towfiq, Asaduzzaman; Khalat, Abdurazag Mohamed; Blanch Boris, Sebastián; Romeu Robert, Jordi; Jofre Roca, Lluís; Cetiner, Bedri Artug (2019-10)
      Article
      Open Access
      This letter presents the error vector magnitude (EVM), intermodulation (IM), and radiation performances of a reconfigurable antenna capable of varying its bandwidth between 3.4-3.6 and 3.1-3.9 GHz bands, and steering its ...
    • Frequency, radiation pattern and polarization reconfigurable antenna using a parasitic pixel layer 

      Rodrigo López, Daniel; Cetiner, Bedri Artug (2014-06-01)
      Article
      Restricted access - publisher's policy
      This communication presents a reconfigurable antenna capable of independently reconfiguring the operating frequency, radiation pattern and polarization. A switched grid of small metallic patches, known as pixel surface, ...
    • Genetic reconfigurability of a multi-size pixelled antenna 

      Rodrigo López, Daniel; Jofre Roca, Lluís; Unlu, M.; Damgaci, Yacine; Cetiner, Bedri Artug; Romeu Robert, Jordi (2010)
      Conference report
      Open Access
    • Magnetoelectric dipole antenna framework supporting orbital angular momentum modes 

      Jofre Cruanyes, Marc; Akazzim, Youness; Blanch Boris, Sebastián; Romeu Robert, Jordi; Cetiner, Bedri Artug; Jofre Roca, Lluís (2024)
      Article
      Restricted access - publisher's policy
      The ability to utilize resources to meet the need of growing diversity of communication services and user behavior marks the future of cognitive wireless communication systems. Cognitive wireless technologies for vehicular ...
    • MEMS-reconfigurable antenna based on a multi-size pixelled geometry 

      Rodrigo, Daniel; Damgaci, T.; Cetiner, Bedri Artug; Romeu Robert, Jordi; Jofre Roca, Lluís (2010)
      Conference report
      Open Access
      A MEMS reconfigurable antenna with beam steering capability and resonance frequency reconfigurability is presented. The design is based in an interconnected patch grid structure and employs a hybrid geometry with different ...
    • Miniature multi-element antenna for wireless communications 

      Jofre Roca, Lluís; Cetiner, Bedri Artug; Flaviis, Franco de (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-05-31)
      Article
      Open Access
      We present a novel broad-band miniature antenna and employ it in a multi-element geometry with diversity capabilities for wireless communications. This antenna (diameter < 0.2 λ and thickness < 0.06 λ) consists of two ...
    • 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
      Restricted access - publisher's policy
      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 ...
    • Pixel reconfigurable antennas: towards low-complexity full reconfiguration 

      Rodrigo López, Daniel; Romeu Robert, Jordi; Cetiner, Bedri Artug; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      The explosive growth of wireless communications has brought new requirements in terms of compactness, mobility and multi-functionality that make reconfigurable antennas excellent candidates for future wireless networks. ...
    • Polarization reconfigurable MEMS-CPW antenna for mm-wave applications 

      Balcells Ventura, Jordi; Damgaci, T.; Cetiner, Bedri Artug; Romeu Robert, Jordi; Jofre Roca, Lluís (2010)
      Conference report
      Open Access
      This letter presents a polarization reconfigurable MEMS-integrated coplanar patch antenna for mm-wave applications. The polarization of the field radiated by this reconfigurable antenna can be configured into right-handed ...
    • Reconfigurable dual-polarized beam-steering broadband antenna using a crossed-strips geometry 

      Ramírez Arroyave, Germán Augusto; Zhou, Ivan; Blanch Boris, Sebastián; Towfiq, Asaduzzaman; Cetiner, Bedri Artug; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2021-08)
      Article
      Open Access
      In this letter, a reconfigurable dual-polarized broadband antenna with beam-steering capabilities using a parasitic layer is proposed for 5G new radio (NR) frequency range 1 (FR-1) applications. The antenna is a dual-port ...
    • RF MEMS reconfigurable two-band antenna 

      Zohur, Abdul; Mopidevi, Hema Swaroop; Rodrigo López, Daniel; Unlu, M.; Jofre Roca, Lluís; Cetiner, Bedri Artug (2013-01-09)
      Article
      Restricted access - publisher's policy
    • Small pixelled antenna with mems-reconfigurable radiation pattern 

      Rodrigo López, Daniel; Damgaci, Yacine; Unlu, M.; Jofre Roca, Lluís; Cetiner, Bedri Artug (2010)
      Conference report
      Open Access
    • Small-size broadband multi-element antenna for RF/wireless systems 

      Cetiner, Bedri Artug; Jofre Roca, Lluís; Qian, J. Y.; Flaviis, Franco de (IEEE, 2003-10-31)
      Article
      Open Access
      We present a small-size broadband antenna specifically designed for integration with RF/wireless communication systems. The antenna is built on a printed circuit board and fed by a coplanar waveguide (CPW) to allow further ...