Enhanced gain by double-periodic stacked subwavelength hole array

Research output: Contribution to journalArticlepeer-review


  • M. Beruete
  • I. Campillo
  • J. E. Rodríguez-Seco
  • E. Perea
  • I. J. Núñez-Manrique
  • M. Sorolla

Colleges, School and Institutes

External organisations

  • Universidad Pública de Navarra
  • CIC NanoGUNE Consolider
  • LABEIN-Tecnalia


Using a doubly periodicity structure the extraordinary transmission of subwavelength metallic hole arrays in the microwave range can be boosted. Stacking several of such plates a left-handed metamaterial can be obtained as it is shown by the computed dispersion diagrams as well as the amplitude and phase measurements. An effective refraction index along the propagation direction can be calculated, giving a negative magnitude between -1 and 0. This enhances the emission by a focused beam with narrow beamwidth. Several practical applications like novel antennas are envisaged.


Original languageEnglish
Pages (from-to)831-833
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number12
Publication statusPublished - Dec 2007


  • Extraordinary transmission (ET), Left-handed metamaterials (LHM)

ASJC Scopus subject areas