Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns
True-time delay antenna arrays have gained a prominent attention in ultrawideband (UWB) applications such as directional communications and radar. This paper presents the design of steerable UWB circular array by using a multiobjective time-domain synthesis of energy pattern for circular antenna arr...
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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/10.1155/2015/789094 |
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| author | Leopoldo A. Garza Marco A. Panduro David H. Covarrubias Alberto Reyna |
| author_facet | Leopoldo A. Garza Marco A. Panduro David H. Covarrubias Alberto Reyna |
| author_sort | Leopoldo A. Garza |
| collection | DOAJ |
| description | True-time delay antenna arrays have gained a prominent attention in ultrawideband (UWB) applications such as directional communications and radar. This paper presents the design of steerable UWB circular array by using a multiobjective time-domain synthesis of energy pattern for circular antenna arrays. By this way we avoid individual beamforming for each frequency in UWB spectrum if the problem was addressed from the frequency domain. In order to obtain an energy pattern with low side lobe level and a desired main beam, the synthesis presented is performed by optimizing the true-time delays and amplitude coefficients for the antenna elements in a circular geometry. The method of Differential Evolution for Multiobjective Optimization (DEMO) is used as the optimization algorithm in this work. This design of steerable UWB circular arrays considers the optimization of the true-time exciting delays and the amplitude coefficients across the antenna elements to operate with optimal performance in the whole azimuth plane (360°). A comparative analysis of the performance of the optimized design with the case of conventional progressive delay excitations is achieved. The provided results show a good performance for energy patterns and for their respective power patterns in the UWB spectrum. |
| format | Article |
| id | doaj-art-d7edacb1cb2440e4855783458f9194c8 |
| 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-d7edacb1cb2440e4855783458f9194c82025-02-03T01:11:47ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/789094789094Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy PatternsLeopoldo A. Garza0Marco A. Panduro1David H. Covarrubias2Alberto Reyna3CICESE Research Center, Km 107 Carretera Tijuana-Ensenada, 22860 Ensenada, BCN, MexicoCICESE Research Center, Km 107 Carretera Tijuana-Ensenada, 22860 Ensenada, BCN, MexicoCICESE Research Center, Km 107 Carretera Tijuana-Ensenada, 22860 Ensenada, BCN, MexicoUniversidad Autónoma de Tamaulipas, UAMR-R, Carretera Reynosa-San Fernando, 88779 Reynosa, TAMPS, MexicoTrue-time delay antenna arrays have gained a prominent attention in ultrawideband (UWB) applications such as directional communications and radar. This paper presents the design of steerable UWB circular array by using a multiobjective time-domain synthesis of energy pattern for circular antenna arrays. By this way we avoid individual beamforming for each frequency in UWB spectrum if the problem was addressed from the frequency domain. In order to obtain an energy pattern with low side lobe level and a desired main beam, the synthesis presented is performed by optimizing the true-time delays and amplitude coefficients for the antenna elements in a circular geometry. The method of Differential Evolution for Multiobjective Optimization (DEMO) is used as the optimization algorithm in this work. This design of steerable UWB circular arrays considers the optimization of the true-time exciting delays and the amplitude coefficients across the antenna elements to operate with optimal performance in the whole azimuth plane (360°). A comparative analysis of the performance of the optimized design with the case of conventional progressive delay excitations is achieved. The provided results show a good performance for energy patterns and for their respective power patterns in the UWB spectrum.http://dx.doi.org/10.1155/2015/789094 |
| spellingShingle | Leopoldo A. Garza Marco A. Panduro David H. Covarrubias Alberto Reyna Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns International Journal of Antennas and Propagation |
| title | Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns |
| title_full | Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns |
| title_fullStr | Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns |
| title_full_unstemmed | Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns |
| title_short | Multiobjective Synthesis of Steerable UWB Circular Antenna Array considering Energy Patterns |
| title_sort | multiobjective synthesis of steerable uwb circular antenna array considering energy patterns |
| url | http://dx.doi.org/10.1155/2015/789094 |
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