Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications
A microstrip array antenna (MAA) structure incorporated with an orthogonal I-shaped defected ground structure (OI-DGS) was proposed and investigated and its equivalent circuit was created. Reflection losses were simulated and verified with the proposed circuit model using CST Commercial and AWR...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Penerbit UTHM
2021
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6900/ http://eprints.uthm.edu.my/6900/1/J14094_625f76653cd0caa7792eb256320b72b1.pdf |
| _version_ | 1848888943599157248 |
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| author | Ahmad, Khalid Subhi Che Seman, Fauziahanim Hamzah, Shipun Anuar Goh, Chin Hock Mohd Shah, Shaharil |
| author_facet | Ahmad, Khalid Subhi Che Seman, Fauziahanim Hamzah, Shipun Anuar Goh, Chin Hock Mohd Shah, Shaharil |
| author_sort | Ahmad, Khalid Subhi |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | A microstrip array antenna (MAA) structure incorporated with an orthogonal I-shaped defected ground
structure (OI-DGS) was proposed and investigated and its equivalent circuit was created. Reflection losses were
simulated and verified with the proposed circuit model using CST Commercial and AWR Microwave Office
software. The optimized S11 parameter of the model was obtained by tuning the dimensions of the microstrip patch
elements in the MAA and the lengths and widths of the slots of defected ground structure (DGS). The proposed
equivalent circuit is expected to be useful as a model for the DGS design and to study its behavior. Finally, two
prototypes of MAA, without and with OI-DGS, were fabricated by the milling technology and tested. The
simulated results showed that -5.53 dB mutual coupling reduction and the measured around -3 dB. The simulated
results demonstrate that main beam shifted 43° while the measured main beam shifted 36°. |
| first_indexed | 2025-11-15T20:18:19Z |
| format | Article |
| id | uthm-6900 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:18:19Z |
| publishDate | 2021 |
| publisher | Penerbit UTHM |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-69002022-04-12T06:38:45Z http://eprints.uthm.edu.my/6900/ Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications Ahmad, Khalid Subhi Che Seman, Fauziahanim Hamzah, Shipun Anuar Goh, Chin Hock Mohd Shah, Shaharil TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television A microstrip array antenna (MAA) structure incorporated with an orthogonal I-shaped defected ground structure (OI-DGS) was proposed and investigated and its equivalent circuit was created. Reflection losses were simulated and verified with the proposed circuit model using CST Commercial and AWR Microwave Office software. The optimized S11 parameter of the model was obtained by tuning the dimensions of the microstrip patch elements in the MAA and the lengths and widths of the slots of defected ground structure (DGS). The proposed equivalent circuit is expected to be useful as a model for the DGS design and to study its behavior. Finally, two prototypes of MAA, without and with OI-DGS, were fabricated by the milling technology and tested. The simulated results showed that -5.53 dB mutual coupling reduction and the measured around -3 dB. The simulated results demonstrate that main beam shifted 43° while the measured main beam shifted 36°. Penerbit UTHM 2021 Article PeerReviewed text en http://eprints.uthm.edu.my/6900/1/J14094_625f76653cd0caa7792eb256320b72b1.pdf Ahmad, Khalid Subhi and Che Seman, Fauziahanim and Hamzah, Shipun Anuar and Goh, Chin Hock and Mohd Shah, Shaharil (2021) Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications. International Journal of Integrated Engineering, 13 (1). pp. 101-119. ISSN 2229-838X https://doi.org/10.30880/ijie.2021.13.01.010 |
| spellingShingle | TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television Ahmad, Khalid Subhi Che Seman, Fauziahanim Hamzah, Shipun Anuar Goh, Chin Hock Mohd Shah, Shaharil Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title | Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title_full | Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title_fullStr | Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title_full_unstemmed | Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title_short | Circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| title_sort | circuit model for microstrip array antenna with defected ground structures for mutual coupling reduction and beamforming applications |
| topic | TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television |
| url | http://eprints.uthm.edu.my/6900/ http://eprints.uthm.edu.my/6900/ http://eprints.uthm.edu.my/6900/1/J14094_625f76653cd0caa7792eb256320b72b1.pdf |