Now showing items 21-28 of 28

    • Novel optical antenna designs of comb shaped split ring architecture for NIR and MIR enhanced field localization 

      Kılıç, Veli Tayfun; Ertürk, Vakur B.; Demir, Hilmi Volkan (IEEE, 2014)
      We demonstrated NIR/MIR resonance behavior in optical antennas of comb-shaped split-ring resonators enabling substantially larger field enhancements than single/array of dipoles with the same side length, despite their ...
    • Novel SIW based interdigital bandpass filter with harmonic suppression 

      Kurudere, S.; Ertürk, Vakur B. (IEEE, 2014)
      A novel configuration for substrate integrated waveguide (SIW) based bandpass filter with interdigital type resonators is presented. In the proposed structure, interdigital type resonators consisting of vias and circular ...
    • Optimization of linear wire antenna arrays to increase MIMO capacity using swarm intelligence 

      Olgun, Uğur; Tunç, Celal Alp; Aktaş, Defne; Ertürk, Vakur B.; Altıntaş, Ayhan (Institution of Engineering and Technology, 2007)
      Free standing linear arrays (FSLA) are analyzed and optimized to increase MIMO capacity. A MIMO channel model based on electric fields is used. The effects of mutual interactions among the array elements are included into ...
    • RF displacement and strain sensing system for wireless structural health monitoring 

      Özbey, Burak; Kurç, O.; Demir, Hilmi Volkan; Ertürk, Vakur B.; Altıntaş, Ayhan (IEEE, 2015)
      Structural health monitoring (SHM) is a technology with worldwide interest that is vital to ensure the reliability of any structure while also protecting the safety of human life. Over the years, a lot of research has been ...
    • Structuring research on conformal antennas a European collaboration 

      Sipus, Z.; Persson, P.; Lanne, M.; Heckler, M.; Maci, S.; Masa-Campos, J. L.; Knott, P.; Ertürk, Vakur B.; Vandenbosch, G. (Institution of Engineering and Technology, 2007)
      The topic of this paper is the work carried out within work package 2.4-3 of the EU network "antenna centre of excellence" (ACE). This work package is concerned with structuring research on conformal antennas. In particular, ...
    • Use of characteristic basis function method for scattering from terrain profiles 

      Yağbasan, Atacan; Tunç, Celal Alp; Ertürk, Vakur B.; Altıntaş, Ayhan; Mittra, R. (TÜBİTAK, 2008)
      An integral equation (IE) based solution procedure is presented for the rigorous analysis of scattering from terrain profiles. The procedure uses characteristic basis function method (CBFM), which is hybridized with the ...
    • A wireless metamaterial-inspired passive rotation sensor with submilliradian resolution 

      Gargari, Ali Maleki; Özbey, Burak; Demir, Hilmi Volkan; Altıntaş, Ayhan; Albostan, U.; Kurc, O.; Ertürk, Vakur B. (Institute of Electrical and Electronics Engineers, 2018)
      A novel passive wireless rotation sensing system with high levels of sensitivity and resolution is proposed and demonstrated for measuring elastic-region bending in materials such as steel. This system is composed of a ...
    • Wireless monitoring of a structural beam to be used for post-earthquake damage assessment 

      Özbey, B.; Kurc, O.; Demir, Hilmi Volkan; Ertürk, Vakur B.; Altıntaş, Ayhan (IEEE, 2018-05-06)
      Wireless monitoring of a standard reinforced concrete beam is shown in a simply supported beam experiment. The passive nested split-ring resonator (NSRR) probes are attached on the reinforcing bars (rebars) within the beam, ...