| Autor: |
Zaid Akram, Xiuping Li, Zihang Qi, Abdul Aziz, Li Yu, Hua Zhu, Xing Jiang, Xiaoming Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 7, Pp 71963-71971 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2019.2919779 |
| Popis: |
In this paper, high-order orbital angular momentum (OAM) vortex beams (OAMVBs) are generated using reflective metasurface. Generating high-order OAMVBs using traditional reflective metasurface methods deteriorates the radiation performance that affects the mode purity of OAMVBs. A reflective metasurface is proposed to generate the OAMVBs with l = 4 mode at the designed frequency of 6 GHz. It is revealed that the radiation performance has been improved and mode purity for l = 4 is increased 12.6% by using quarter wavelength unit cell and circular aperture metasurface as compared to the conventional metasurface at the designed frequency. Moreover, the reflective metasurface can generate the OAMVBs with l = 4 mode from 5 GHz to 7.5 GHz. The measured gain is 17.93 dBi which agrees well with the simulated gain. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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