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

Hongyu Shi; Luyi Wang; Mengran Zhao; Juan Chen; Anxue Zhang; Zhuo Xu

doi:10.3390/ma11122448

Materials (Dec 2018)

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

Hongyu Shi,
Luyi Wang,
Mengran Zhao,
Juan Chen,
Anxue Zhang,
Zhuo Xu

Affiliations

Hongyu Shi: School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Luyi Wang: School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Mengran Zhao: School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Juan Chen: Xi’an Jiaotong University Shenzhen Research School, Shenzhen 518057, China
Anxue Zhang: School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Zhuo Xu: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China

DOI: https://doi.org/10.3390/ma11122448
Journal volume & issue: Vol. 11, no. 12
p. 2448

Abstract

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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.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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