Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays
To improve the performance of mobile satellite communications, such as for INMARSAT-M mobile vehicles, antenna with high gain and circular polarization over a wide angular range is important. With only 3-elements circularly polarized double-layered printed hemispherical helical antenna arrays that i...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/15729/1/Gain_enhancement_for_circularly_polarized_double_layered_printed_hemispherical_helical.pdf |
| _version_ | 1825720724424228864 |
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| author | Latef, T.A. Khamas, S. Reza, A.W. |
| author_facet | Latef, T.A. Khamas, S. Reza, A.W. |
| author_sort | Latef, T.A. |
| collection | UM |
| description | To improve the performance of mobile satellite communications, such as for INMARSAT-M mobile vehicles, antenna with high gain and circular polarization over a wide angular range is important. With only 3-elements circularly polarized double-layered printed hemispherical helical antenna arrays that incorporated with parasitic helical wire in the structure, the array can produce significant improvement where it has been demonstrated that the gain and the 3dB axial ratio (AR) bandwidth and beam width can be increased by properly adjusting the relative angular displacement (1), (2), (3), and the inter-element spacing d(x) and d(y). Experimental and theoretical results demonstrate that the array can produce a gain of 11dBi, the 3dB AR bandwidth of more than 11 with AR beam width of similar to 136 degrees, and the mutual couplings between each element less than -23dB at required 3dB AR bandwidth frequency range. The antenna design is performed in computer simulation technology and verified by measurement. |
| first_indexed | 2024-03-06T05:39:30Z |
| format | Article |
| id | um.eprints-15729 |
| institution | Universiti Malaya |
| language | English |
| last_indexed | 2024-03-06T05:39:30Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | um.eprints-157292016-04-04T01:13:52Z http://eprints.um.edu.my/15729/ Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays Latef, T.A. Khamas, S. Reza, A.W. T Technology (General) TK Electrical engineering. Electronics Nuclear engineering To improve the performance of mobile satellite communications, such as for INMARSAT-M mobile vehicles, antenna with high gain and circular polarization over a wide angular range is important. With only 3-elements circularly polarized double-layered printed hemispherical helical antenna arrays that incorporated with parasitic helical wire in the structure, the array can produce significant improvement where it has been demonstrated that the gain and the 3dB axial ratio (AR) bandwidth and beam width can be increased by properly adjusting the relative angular displacement (1), (2), (3), and the inter-element spacing d(x) and d(y). Experimental and theoretical results demonstrate that the array can produce a gain of 11dBi, the 3dB AR bandwidth of more than 11 with AR beam width of similar to 136 degrees, and the mutual couplings between each element less than -23dB at required 3dB AR bandwidth frequency range. The antenna design is performed in computer simulation technology and verified by measurement. 2015-07-03 Article PeerReviewed application/pdf en http://eprints.um.edu.my/15729/1/Gain_enhancement_for_circularly_polarized_double_layered_printed_hemispherical_helical.pdf Latef, T.A. and Khamas, S. and Reza, A.W. (2015) Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays. Journal of Electromagnetic Waves and Applications, 29 (10). pp. 1342-1353. ISSN 0920-5071, DOI https://doi.org/10.1080/09205071.2015.1044126 <https://doi.org/10.1080/09205071.2015.1044126>. http://www.tandfonline.com/doi/pdf/10.1080/09205071.2015.1044126 10.1080/09205071.2015.1044126 |
| spellingShingle | T Technology (General) TK Electrical engineering. Electronics Nuclear engineering Latef, T.A. Khamas, S. Reza, A.W. Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title | Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title_full | Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title_fullStr | Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title_full_unstemmed | Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title_short | Gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| title_sort | gain enhancement for circularly polarized double layered printed hemispherical helical antenna arrays |
| topic | T Technology (General) TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.um.edu.my/15729/1/Gain_enhancement_for_circularly_polarized_double_layered_printed_hemispherical_helical.pdf |
| work_keys_str_mv | AT latefta gainenhancementforcircularlypolarizeddoublelayeredprintedhemisphericalhelicalantennaarrays AT khamass gainenhancementforcircularlypolarizeddoublelayeredprintedhemisphericalhelicalantennaarrays AT rezaaw gainenhancementforcircularlypolarizeddoublelayeredprintedhemisphericalhelicalantennaarrays |