Development of high gain multiband antenna with centre-offset copper strip-based periodic structure

Mohammad Tariqul Islam, M. S. Alam, Norbahiah Misran, Mahamod Ismail, Baharudin Yatim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this article, two coplanar waveguide-fed high gain multiband antennas with and without uniplanar copper strip-based electromagnetic band gap (CS-EBG) structure are proposed for portable wireless applications at 2.1, 2.4, 3.5, 5.2, 5.4, and 5.8 GHz. The initial multiband antenna is realized by patch-ground shape modification and open-ended rectangular slot insertion on the patch. The two layer uniplanar CS-EBG structure is composed of square ring periodic elements of copper strips of different widths and gaps. The top unit cells are placed at an offset position with respect to the bottom layer, which is new technique applied to obtain multiple resonances from such a simple and compact planar structure. The antenna, when combined with the CS-EBG structure, still preserved its multiband characteristics and produced directional pattern because of the reflecting property (like artificial magnetic conductor, AMC) of the CS-EBG/AMC structure behind it, which was donut and omnidirectional shape in case of the antenna alone. The initial antenna gain is 5 dBi while the final antenna gain is improved to approximately 12 dBi at the first band and more than 6 dBi at other bands. Thus, the developed square ring copper strip structure is very effective to improve the antenna performances and finally resulted in a high gain antenna. Both of the configurations with and without the CS-EBG/AMC are fabricated and tested, and the measurements are well agreed with the simulations. Despite of the slight frequency shifting, the antenna is still suitable for the portable wireless operation such as Wi-Fi, WiMax, WLAN/HIPERLAN and even for LTE/4G technology at some frequencies.

Original languageEnglish
Pages (from-to)1608-1614
Number of pages7
JournalMicrowave and Optical Technology Letters
Volume57
Issue number7
DOIs
Publication statusPublished - 1 Jul 2015

Fingerprint

Periodic structures
high gain
Copper
strip
antennas
Antennas
copper
electromagnetism
Energy gap
antenna gain
conductors
rings
planar structures
local thermodynamic equilibrium
Wimax
slots
Wi-Fi
Antenna grounds
Coplanar waveguides
insertion

Keywords

  • antenna
  • coplanar waveguide
  • electromagnetic band gap
  • multiband
  • patch antenna

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Development of high gain multiband antenna with centre-offset copper strip-based periodic structure. / Islam, Mohammad Tariqul; Alam, M. S.; Misran, Norbahiah; Ismail, Mahamod; Yatim, Baharudin.

In: Microwave and Optical Technology Letters, Vol. 57, No. 7, 01.07.2015, p. 1608-1614.

Research output: Contribution to journalArticle

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