TY - JOUR
T1 - Quasi-continuous metasurfaces for orbital angular momentum generation
AU - Chen, Menglin L.N.
AU - Jiang, Li Jun
AU - Sha, Wei E.I.
N1 - Funding Information:
Manuscript received December 27, 2018; accepted January 19, 2019. Date of publication January 23, 2019; date of current version March 1, 2019. This work was supported in part by the Research Grants Council of Hong Kong under Grant GRF 17209918, in part by the AOARD under Grant FA2386-17-1-0010, in part by the NSFC under Grant 61271158, in part by the HKU Seed Fund under Grant 201711159228, and in part by the Hundred Talents Program of Zhejiang University under Grant 188020*194231701/208. (Corresponding author: Li Jun Jiang.) M. L. N. Chen and L. J. Jiang are with the Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong (e-mail:, [email protected]; [email protected]).
Publisher Copyright:
© 2018 IEEE.
PY - 2019/3
Y1 - 2019/3
N2 - A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.
AB - A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.
KW - Grating vector
KW - Orbital angular momentum (OAM)
KW - Quasi-continuous metasurface
UR - http://www.scopus.com/inward/record.url?scp=85062595534&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2019.2894772
DO - 10.1109/LAWP.2019.2894772
M3 - Journal article
AN - SCOPUS:85062595534
SN - 1536-1225
VL - 18
SP - 477
EP - 481
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 3
M1 - 8624314
ER -