Browsing by Author "Kossifos, K. M."

Now showing items 1-4 of 4

    • Conference Object  

      Analysis of an off-broadside zero beam-squinting leaky-wave antenna using metamaterials 

      Kossifos, K. M.; Antoniades, Marcos A. (Institute of Electrical and Electronics Engineers Inc., 2016)
      It is shown that zero beam-squinting can be achieved in both series fed antenna arrays and leaky-wave antennas by employing two parallel-connected metamaterial transmission lines with equal positive group delays, but with ...
    • Conference Object  

      Chua Mem-Components for Adaptive RF Metamaterials 

      Georgiou, Julius; Kossifos, K. M.; Antoniades, Marco A.; Jaafar, A.H.; Kemp, N. T. (2018)
      Chua's mem-components are ideal for creating adaptive metasurfaces for manipulating EM waves given that they hold their state without external biases. In this paper, we propose a generic adaptive reactive element that is ...
    • Conference Object  

      An Optically-Programmable Absorbing Metasurface 

      Kossifos, K. M.; Antoniades, Marco A.; Georgiou, Julius; Jaafar, A. H.; Kemp, N. T. (2018)
      A tunable metasurface absorber is presented in this work using an optically-programmable capacitor as the tuning element. The tuning element does not employ conventional semiconductor technologies to operate but rather a ...
    • Conference Object  

      A zero beam-squinting leaky-wave antenna using NRI-TL metamaterials 

      Kossifos, K. M.; Antoniades, Marcos A. (Institute of Electrical and Electronics Engineers Inc., 2015)
      A planar zero beam-squinting leaky-wave antenna is proposed at 5 GHz, consisting of a periodic arrangement of negative-refractive-index transmission-line (NRI-TL) metamaterial unit cells. The antenna is centre-fed through ...