Directivity improvement of microstrip antenna by inverse refraction metamaterial

Bilal Tütüncü*, Hamid Torpi, S. Taha İmeci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Due to the properties of inverse refraction, the metamaterials can focus the incident wave and can be used as a lens for high directive antennas. For this purpose, in this study, initially, a metamaterial unit cell is designed to exhibit metamaterial feature at 12 GHz and converted into a periodic layer. The reference antenna and the proposed metamaterial layers are simulated and fabricated. It is observed that the directivity of the reference antenna is increased by 2.74 dB with one layer of the proposed metalayer according to the measurement results. Finally, a double lens layer is used and an increase of 4.08 dB is observed. In the literature, the dimensions of metalayers, that is, used to achieve directivity enhancement, are larger than the patch size, but in this study we achieve a significant improvement with metalayers that have almost the same dimensions as the patch. However, the proposed antenna system is more effective than Ku-band antennas in the literature due to its high directivity compared to similar ones.

Original languageEnglish
Pages (from-to)151-164
Number of pages14
JournalJournal of Engineering Research (Kuwait)
Volume7
Issue number4
Publication statusPublished - 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 University of Kuwait. All rights reserved.

Keywords

  • Antenna directivity
  • LHM
  • Metamaterial
  • Microstrip patch antenna

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