High directivity broadband hexagonal fractal ring antenna with modified ground

Tharanga Premathilake, Jeevani Jayasinghe*, Omar Saraereh, Karu Esselle, Rajas Khokle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
56 Downloads (Pure)


A highly directive fractal antenna with a novel shape is proposed in this paper. Finite Element Method based simulations were carried out on the first three iterations of a hexagonal fractal ring and the performance was measured in terms of the resonant behavior, directivity, radiation efficiency, current distribution, and radiation pattern. The second iteration fractal antenna radiates well along the broadside direction at the fundamental mode of operation. The ground plane was modified to improve the performance further. The antenna, etched on an FR4 substrate, has a directivity of 11.8 dB along the broadside direction with multi-frequency broadband performance over the frequency range of 3.12-7.46 GHz. Therefore, the proposed fractal antenna can be used for Wireless LAN applications. The antenna was fabricated and measured in order to validate the results.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalECTI Transactions on Electrical Engineering, Electronics, and Communications
Issue number1
Publication statusPublished - 28 Feb 2020

Bibliographical note

Copyright the Author(s) 2020. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


  • Directional Antennas
  • Wireless LAN
  • Finite Element Analysis


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