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Article

Transparent Metasurface for Generating Microwave Vortex Beams with Cross-Polarization Conversion

by
Hongyu Shi
1,
Luyi Wang
1,
Mengran Zhao
1,
Juan Chen
2,*,
Anxue Zhang
1 and
Zhuo Xu
3
1
School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
Xi’an Jiaotong University Shenzhen Research School, Shenzhen 518057, China
3
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(12), 2448; https://doi.org/10.3390/ma11122448
Submission received: 25 October 2018 / Revised: 20 November 2018 / Accepted: 26 November 2018 / Published: 3 December 2018
(This article belongs to the Special Issue New Horizon of Plasmonics and Metamaterials)
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Abstract

In this paper, metasurfaces with both cross-polarization conversion and vortex beam-generating are proposed. The proposed finite metasurface designs are able to change the polarization of incident electromagnetic (EM) waves to its cross-polarization. In addition, they also can modulate the incidences into beams carrying orbital angular momentum (OAM) with different orders ( l = + 1 , l = + 2 , l = − 1 and l = − 2 ) by applying corresponding transmission phase distribution schemes on the metasurface aperture. The generated vortex beams are at 5.14 GHz. The transmission loss is lower than 0.5 dB while the co-polarization level is −10 dB compared to the cross-polarization level. The measurement results confirmed the simulation results and verified the properties of the proposed designs.
Keywords: vortex beam; polarization conversion; orbital angular momentum vortex beam; polarization conversion; orbital angular momentum

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MDPI and ACS Style

Shi, H.; Wang, L.; Zhao, M.; Chen, J.; Zhang, A.; Xu, Z. Transparent Metasurface for Generating Microwave Vortex Beams with Cross-Polarization Conversion. Materials 2018, 11, 2448. https://doi.org/10.3390/ma11122448

AMA Style

Shi H, Wang L, Zhao M, Chen J, Zhang A, Xu Z. Transparent Metasurface for Generating Microwave Vortex Beams with Cross-Polarization Conversion. Materials. 2018; 11(12):2448. https://doi.org/10.3390/ma11122448

Chicago/Turabian Style

Shi, Hongyu, Luyi Wang, Mengran Zhao, Juan Chen, Anxue Zhang, and Zhuo Xu. 2018. "Transparent Metasurface for Generating Microwave Vortex Beams with Cross-Polarization Conversion" Materials 11, no. 12: 2448. https://doi.org/10.3390/ma11122448

APA Style

Shi, H., Wang, L., Zhao, M., Chen, J., Zhang, A., & Xu, Z. (2018). Transparent Metasurface for Generating Microwave Vortex Beams with Cross-Polarization Conversion. Materials, 11(12), 2448. https://doi.org/10.3390/ma11122448

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