Synthesis and Measurement of a Circular-Polarized Deflection OAM Vortex Beam With Sidelobe Suppression Array
| Autor: | Zheng Yushan, Qiang Feng, Jun Liang, Long Li, Zhongliang Jing |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Angular momentum
Chebyshev array synthesis General Computer Science 02 engineering and technology 01 natural sciences Chebyshev filter Radiation pattern Antenna array circular-polarized vortex beam Optics Deflection (engineering) chamfer antenna array 0103 physical sciences Vortex beam 0202 electrical engineering electronic engineering information engineering General Materials Science Center frequency Computer Science::Information Theory 010302 applied physics Physics business.industry Astrophysics::Instrumentation and Methods for Astrophysics General Engineering 020206 networking & telecommunications sidelobe suppression Pattern synthesis orbital angular momentum (OAM) lcsh:Electrical engineering. Electronics. Nuclear engineering business lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 8, Pp 89143-89151 (2020) |
| ISSN: | 2169-3536 |
| DOI: | 10.1109/access.2020.2993877 |
| Popis: | In this paper, a chamfer distribution antenna array is designed to generate a deflecting circular-polarized vortex beam carrying orbital angular momentum (OAM) mode. When the vortex beam is designed with a deflection angle, the sidelobe of the vortex beam will deteriorate. In order to solve this problem, an optimized array design is presented in this paper. Inspired by the Chebyshev distribution array synthesis method, the antenna elements in the four corners of the antenna array are cut out to realize the chamfer distribution array. Therefore, the sidelobe level of the deflected vortex beam can be effectively suppressed. Moreover, a simplified feeding network is designed to reduce the feeding network complexity by using circularly polarized structural center antenna element. The designed antenna array is simulated, fabricated, and measured at center frequency of 4.25 GHz in C-band. The far-field radiation pattern of the deflected vortex beam and the near E-field OAM vortex beam distribution are simulated and measured to verify the effectiveness of the proposed design method for sidelobe suppression array. |
| Databáze: | OpenAIRE |
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