Miniaturized ultra-wideband antenna using microstrip negative index metamaterial
A three left-handed metamaterial unit cell antenna is presented in this article for ultra-wideband applications. Each left-handed metamaterial unit cell is a combination of a modified octagonal split-ring resonator, an octagonal spiral resonator, a capacitance-loaded strip, and a wire in order to ac...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23126/ http://psasir.upm.edu.my/id/eprint/23126/1/Miniaturized%20ultra-wideband%20antenna%20using%20microstrip%20negative%20index%20metamaterial.pdf |
| _version_ | 1848844670524719104 |
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| author | Alhawari, Adam Reda Hasan Ismail, Alyani Mahdi, Mohd Adzir Raja Abdullah, Raja Syamsul Azmir |
| author_facet | Alhawari, Adam Reda Hasan Ismail, Alyani Mahdi, Mohd Adzir Raja Abdullah, Raja Syamsul Azmir |
| author_sort | Alhawari, Adam Reda Hasan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A three left-handed metamaterial unit cell antenna is presented in this article for ultra-wideband applications. Each left-handed metamaterial unit cell is a combination of a modified octagonal split-ring resonator, an octagonal spiral resonator, a capacitance-loaded strip, and a wire in order to achieve a design that simultaneously exhibits both negative electrical permittivity and negative magnetic permeability, which promises an extraordinary index of negative refraction to enhance the radiated power of the antenna, consequently improving the antenna system. The antenna design was etched on an FR4 epoxy substrate (Farnell Electronic Components Limited, Selangor D.E., Malaysia) with an evident compact size of 25×25 1.6 mm3. Return loss measurements demonstrated that this antenna achieves 94% bandwidth for a voltage standing wave ratio less than 2 over the frequency band of 5.2-13.9 GHz, with a maximum gain and directivity of 3.85 dBi and 5.45 dB, respectively, at 10.5 GHz. These measurement results show good agreement with those of the simulations as well as good omni-directional characteristics within its operating frequency band. The proposed metamaterial antenna is compact and highly directive and has a tunable operational frequency especially for ultra-wideband applications. |
| first_indexed | 2025-11-15T08:34:37Z |
| format | Article |
| id | upm-23126 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:34:37Z |
| publishDate | 2011 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-231262016-09-29T08:12:18Z http://psasir.upm.edu.my/id/eprint/23126/ Miniaturized ultra-wideband antenna using microstrip negative index metamaterial Alhawari, Adam Reda Hasan Ismail, Alyani Mahdi, Mohd Adzir Raja Abdullah, Raja Syamsul Azmir A three left-handed metamaterial unit cell antenna is presented in this article for ultra-wideband applications. Each left-handed metamaterial unit cell is a combination of a modified octagonal split-ring resonator, an octagonal spiral resonator, a capacitance-loaded strip, and a wire in order to achieve a design that simultaneously exhibits both negative electrical permittivity and negative magnetic permeability, which promises an extraordinary index of negative refraction to enhance the radiated power of the antenna, consequently improving the antenna system. The antenna design was etched on an FR4 epoxy substrate (Farnell Electronic Components Limited, Selangor D.E., Malaysia) with an evident compact size of 25×25 1.6 mm3. Return loss measurements demonstrated that this antenna achieves 94% bandwidth for a voltage standing wave ratio less than 2 over the frequency band of 5.2-13.9 GHz, with a maximum gain and directivity of 3.85 dBi and 5.45 dB, respectively, at 10.5 GHz. These measurement results show good agreement with those of the simulations as well as good omni-directional characteristics within its operating frequency band. The proposed metamaterial antenna is compact and highly directive and has a tunable operational frequency especially for ultra-wideband applications. Taylor & Francis 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23126/1/Miniaturized%20ultra-wideband%20antenna%20using%20microstrip%20negative%20index%20metamaterial.pdf Alhawari, Adam Reda Hasan and Ismail, Alyani and Mahdi, Mohd Adzir and Raja Abdullah, Raja Syamsul Azmir (2011) Miniaturized ultra-wideband antenna using microstrip negative index metamaterial. Electromagnetics, 31 (6). pp. 404-418. ISSN 0272-6343; ESSN: 1532-527X http://www.tandfonline.com/doi/abs/10.1080/02726343.2011.590961 10.1080/02726343.2011.590961 |
| spellingShingle | Alhawari, Adam Reda Hasan Ismail, Alyani Mahdi, Mohd Adzir Raja Abdullah, Raja Syamsul Azmir Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title | Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title_full | Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title_fullStr | Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title_full_unstemmed | Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title_short | Miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| title_sort | miniaturized ultra-wideband antenna using microstrip negative index metamaterial |
| url | http://psasir.upm.edu.my/id/eprint/23126/ http://psasir.upm.edu.my/id/eprint/23126/ http://psasir.upm.edu.my/id/eprint/23126/ http://psasir.upm.edu.my/id/eprint/23126/1/Miniaturized%20ultra-wideband%20antenna%20using%20microstrip%20negative%20index%20metamaterial.pdf |