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

Islam, M. T., Alam, M. S., Misran, N., Ismail, M. and Yatim, B. (2015) Development of high gain multiband antenna with centre-offset copper strip-based periodic structure. Microwave and Optical Technology Letters, 57 7: 1608-1614. doi:10.1002/mop.29161

Author Islam, M. T.
Alam, M. S.
Misran, N.
Ismail, M.
Yatim, B.
Title Development of high gain multiband antenna with centre-offset copper strip-based periodic structure
Journal name Microwave and Optical Technology Letters   Check publisher's open access policy
ISSN 1098-2760
Publication date 2015-07-01
Year available 2015
Sub-type Article (original research)
DOI 10.1002/mop.29161
Open Access Status
Volume 57
Issue 7
Start page 1608
End page 1614
Total pages 7
Place of publication Hoboken, NJ, United States
Publisher John Wiley and Sons
Collection year 2016
Language eng
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.
Keyword Antenna
Coplanar waveguide
Electromagnetic band gap
Patch antenna
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Information Technology and Electrical Engineering Publications
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