Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency
This paper presents the design of a planar low-profile, wide-gain-bandwidth metasurface antenna at terahertz frequency. The proposed antenna consists of a metasurface and a planar feeding structure, both of which are patterned on an electrically thin, high-permittivity GaAs substrate. The metasurfac...
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doaj-a01814a55b454c64a121baf5ea813c302020-11-24T23:29:15ZengAIP Publishing LLCAIP Advances2158-32262017-05-0175055313055313-1110.1063/1.4984274057705ADVDesign of a wide-gain-bandwidth metasurface antenna at terahertz frequencyNiamat Hussain0Ikmo Park1Department of Electrical and Computer Engineering, Ajou University, 206 Worldcup-ro, Youngtong-gu, Suwon 16499, Republic of KoreaDepartment of Electrical and Computer Engineering, Ajou University, 206 Worldcup-ro, Youngtong-gu, Suwon 16499, Republic of KoreaThis paper presents the design of a planar low-profile, wide-gain-bandwidth metasurface antenna at terahertz frequency. The proposed antenna consists of a metasurface and a planar feeding structure, both of which are patterned on an electrically thin, high-permittivity GaAs substrate. The metasurface, which is printed on the top of the substrate, consists of a periodic array of 5×5 square patches, while the planar feeding structure, which is printed on the bottom of the substrate, is a wideband, leaky-wave, open-ended slotline, which is fed at the center. The antenna with a single feeding structure showed a maximum broadside gain of 9.8 dBi, a radiation efficiency of 69%, and a 3-dB gain bandwidth of 16% (0.34–0.4 THz). The antenna gain performance was significantly improved by exciting the antenna with an array of slit feeding and without changing the antenna size. The antenna with a multiple (five) feeding structure showed a gain of 15.5 dBi, a 3-dB gain bandwidth of 17.3%, and a radiation efficiency of 73%. This antenna achieved a size reduction of 31 times in terms of device thickness in comparison with the design of the lens coupled antenna while achieving a comparable gain. In addition to its high gain and wide-gain-bandwidth characteristics, the proposed antenna design exhibits a low-profile mechanical robustness, easy integration into circuit boards, and excellent low-cost mass production suitability.http://dx.doi.org/10.1063/1.4984274 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Niamat Hussain Ikmo Park |
spellingShingle |
Niamat Hussain Ikmo Park Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency AIP Advances |
author_facet |
Niamat Hussain Ikmo Park |
author_sort |
Niamat Hussain |
title |
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
title_short |
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
title_full |
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
title_fullStr |
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
title_full_unstemmed |
Design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
title_sort |
design of a wide-gain-bandwidth metasurface antenna at terahertz frequency |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2017-05-01 |
description |
This paper presents the design of a planar low-profile, wide-gain-bandwidth metasurface antenna at terahertz frequency. The proposed antenna consists of a metasurface and a planar feeding structure, both of which are patterned on an electrically thin, high-permittivity GaAs substrate. The metasurface, which is printed on the top of the substrate, consists of a periodic array of 5×5 square patches, while the planar feeding structure, which is printed on the bottom of the substrate, is a wideband, leaky-wave, open-ended slotline, which is fed at the center. The antenna with a single feeding structure showed a maximum broadside gain of 9.8 dBi, a radiation efficiency of 69%, and a 3-dB gain bandwidth of 16% (0.34–0.4 THz). The antenna gain performance was significantly improved by exciting the antenna with an array of slit feeding and without changing the antenna size. The antenna with a multiple (five) feeding structure showed a gain of 15.5 dBi, a 3-dB gain bandwidth of 17.3%, and a radiation efficiency of 73%. This antenna achieved a size reduction of 31 times in terms of device thickness in comparison with the design of the lens coupled antenna while achieving a comparable gain. In addition to its high gain and wide-gain-bandwidth characteristics, the proposed antenna design exhibits a low-profile mechanical robustness, easy integration into circuit boards, and excellent low-cost mass production suitability. |
url |
http://dx.doi.org/10.1063/1.4984274 |
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