Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer
A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mai...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/975263 |
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| author | Anwer Sabah Mekki Mohd Nizar Hamidon Alyani Ismail Adam R. H. Alhawari |
| author_facet | Anwer Sabah Mekki Mohd Nizar Hamidon Alyani Ismail Adam R. H. Alhawari |
| author_sort | Anwer Sabah Mekki |
| collection | DOAJ |
| description | A low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. The proposed antenna is simulated and measured. According to the simulated and measured results, it is shown that the unidirectional antenna has a higher gain and a higher front to back ratio (F/B) than the bidirectional one. This is achieved by using a second flame retardant layer (FR-4), coated with an annealed copper of 0.035 mm at both sides, with an air gap of 0.04λ0 as a reflector. A gain of 5.2 dB with directivity of 7.6 dBi, F/B of 9.5 dB, and −18 dB return losses (S11) are achieved through the use of a dual substrate layer of FR-4 with a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication. |
| format | Article |
| id | doaj-art-65136604eb334435bda3f0297b658fc0 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-65136604eb334435bda3f0297b658fc02025-08-20T03:34:36ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/975263975263Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting LayerAnwer Sabah Mekki0Mohd Nizar Hamidon1Alyani Ismail2Adam R. H. Alhawari3Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, MalaysiaFunctional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, MalaysiaWireless and Photonic Network Research Center, Department of Computer and Communication Systems Engineering, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, MalaysiaWireless and Photonic Network Research Center, Department of Computer and Communication Systems Engineering, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, MalaysiaA low profile, unidirectional, dual layer, and narrow bandwidth microstrip patch antenna is designed to resonate at 2.45 GHz. The proposed antenna is suitable for specific applications, such as security and military systems, which require a narrow bandwidth and a small antenna size. This work is mainly focused on increasing the gain as well as reducing the size of the unidirectional patch antenna. The proposed antenna is simulated and measured. According to the simulated and measured results, it is shown that the unidirectional antenna has a higher gain and a higher front to back ratio (F/B) than the bidirectional one. This is achieved by using a second flame retardant layer (FR-4), coated with an annealed copper of 0.035 mm at both sides, with an air gap of 0.04λ0 as a reflector. A gain of 5.2 dB with directivity of 7.6 dBi, F/B of 9.5 dB, and −18 dB return losses (S11) are achieved through the use of a dual substrate layer of FR-4 with a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed dual layer microstrip patch antenna has an impedance bandwidth of 2% and the designed antenna shows very low complexity during fabrication.http://dx.doi.org/10.1155/2015/975263 |
| spellingShingle | Anwer Sabah Mekki Mohd Nizar Hamidon Alyani Ismail Adam R. H. Alhawari Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer International Journal of Antennas and Propagation |
| title | Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer |
| title_full | Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer |
| title_fullStr | Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer |
| title_full_unstemmed | Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer |
| title_short | Gain Enhancement of a Microstrip Patch Antenna Using a Reflecting Layer |
| title_sort | gain enhancement of a microstrip patch antenna using a reflecting layer |
| url | http://dx.doi.org/10.1155/2015/975263 |
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