Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array
Antenna array is one of the methods which can generate Orbital Angular Momentum (OAM) waves. However, OAM waves generated by different antenna arrays have different characteristics of Electric-field (E-field) components’ distribution and radiation patterns. In order to solve this problem, we derive...
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KeAi Communications Co., Ltd.
2021-02-01
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| Series: | Digital Communications and Networks |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352864820302704 |
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| author | Dandan Liu Liangqi Gui Ke Chen Liang Lang Zixiao Zhang Han Chen Lixing Liu Tao Jiang |
| author_facet | Dandan Liu Liangqi Gui Ke Chen Liang Lang Zixiao Zhang Han Chen Lixing Liu Tao Jiang |
| author_sort | Dandan Liu |
| collection | DOAJ |
| description | Antenna array is one of the methods which can generate Orbital Angular Momentum (OAM) waves. However, OAM waves generated by different antenna arrays have different characteristics of Electric-field (E-field) components’ distribution and radiation patterns. In order to solve this problem, we derive E-field formulas of OAM waves generated by different kinds of dipole antenna array in this paper. The dipole antenna arrays are arranged by three methods: 1) antenna elements are in the same direction of y axis, 2) antenna elements are in the radial direction and 3) antenna elements are in the azimuthal direction. Results show that x components, y components and z components carry different OAM modes under the three conditions. Simulation results show that the same direction antenna array produces the best OAM waves because the y component is dominated by OAM mode l and RHCP/LHCP waves are negligible in energy, while the pure OAM waves carried by the z components generated by the other two antenna arrays have little energy. In addition, only the radiation pattern of l=0 produced by the same direction antenna array does not have a null zone in the propagation direction. Radiation patterns of l=±1 do not have null zones in the propagation direction generated by other two antenna arrays. |
| first_indexed | 2024-12-22T16:20:31Z |
| format | Article |
| id | doaj.art-7587cbe9b97c44429e2627619f4939a9 |
| institution | Directory Open Access Journal |
| issn | 2352-8648 |
| language | English |
| last_indexed | 2024-12-22T16:20:31Z |
| publishDate | 2021-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Digital Communications and Networks |
| spelling | doaj.art-7587cbe9b97c44429e2627619f4939a92022-12-21T18:20:14ZengKeAi Communications Co., Ltd.Digital Communications and Networks2352-86482021-02-01711628Theoretical analysis and comparison of OAM waves generated by three kinds of antenna arrayDandan Liu0Liangqi Gui1Ke Chen2Liang Lang3Zixiao Zhang4Han Chen5Lixing Liu6Tao Jiang7Wuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaWuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaCorresponding author.; Wuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, Wuhan, 430074, ChinaAntenna array is one of the methods which can generate Orbital Angular Momentum (OAM) waves. However, OAM waves generated by different antenna arrays have different characteristics of Electric-field (E-field) components’ distribution and radiation patterns. In order to solve this problem, we derive E-field formulas of OAM waves generated by different kinds of dipole antenna array in this paper. The dipole antenna arrays are arranged by three methods: 1) antenna elements are in the same direction of y axis, 2) antenna elements are in the radial direction and 3) antenna elements are in the azimuthal direction. Results show that x components, y components and z components carry different OAM modes under the three conditions. Simulation results show that the same direction antenna array produces the best OAM waves because the y component is dominated by OAM mode l and RHCP/LHCP waves are negligible in energy, while the pure OAM waves carried by the z components generated by the other two antenna arrays have little energy. In addition, only the radiation pattern of l=0 produced by the same direction antenna array does not have a null zone in the propagation direction. Radiation patterns of l=±1 do not have null zones in the propagation direction generated by other two antenna arrays.http://www.sciencedirect.com/science/article/pii/S2352864820302704Orbital angular momentumCircularly polarized waveAntenna arrayTheoretical formula |
| spellingShingle | Dandan Liu Liangqi Gui Ke Chen Liang Lang Zixiao Zhang Han Chen Lixing Liu Tao Jiang Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array Digital Communications and Networks Orbital angular momentum Circularly polarized wave Antenna array Theoretical formula |
| title | Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array |
| title_full | Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array |
| title_fullStr | Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array |
| title_full_unstemmed | Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array |
| title_short | Theoretical analysis and comparison of OAM waves generated by three kinds of antenna array |
| title_sort | theoretical analysis and comparison of oam waves generated by three kinds of antenna array |
| topic | Orbital angular momentum Circularly polarized wave Antenna array Theoretical formula |
| url | http://www.sciencedirect.com/science/article/pii/S2352864820302704 |
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