TY - JOUR
T1 - Detection of orbital angular momentum with metasurface at microwave band
AU - Chen, Menglin L.N.
AU - Jiang, Li Jun
AU - Sha, Wei E.I.
N1 - Funding Information:
Manuscript received October 17, 2017; revised November 20, 2017; accepted November 21, 2017. Date of publication November 24, 2017; date of current version January 10, 2018. This work was supported in part by the Research Grants Council of Hong Kong under Grant GRF 716713, Grant GRF 17207114, and Grant GRF 17210815, in part by the National Natural Science Foundation under Grant 61271158, in part by Hong Kong UGC under Grant AoE/P-04/08, in part by the Asian Office of Aerospace Research and Development under Grant FA2386-17-1-0010, in part by Hong Kong under Grant ITP/045/14LP, and in part by Hundred Talents Program of Zhejiang University under Grant No. 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:
© 2017 IEEE.
PY - 2018/1
Y1 - 2018/1
N2 - An orbital angular momentum (OAM) detection approach at microwave band is proposed. A transmittance function is exploited to model a transmissive metasurface. Then, the metasurface is designed to convert an OAM wave to multiple waves, only one of which is Gaussian. The radiation direction of the Gaussian wave is distinguishable according to the order of incident OAM. Consequently, by locating the Gaussian wave, the incident OAM can be conveniently determined. We use a simple field source to simulate the incident OAM wave in full-wave simulation. It largely simplifies the simulation process when an incident wave carrying OAM is needed. Both numerical and full-wave simulation results are provided to validate our design, and they show good agreement with each other. Then, the metasurface is optimized for high directivity. Our work can provide an efficient and effective way for OAM detection in radio communications.
AB - An orbital angular momentum (OAM) detection approach at microwave band is proposed. A transmittance function is exploited to model a transmissive metasurface. Then, the metasurface is designed to convert an OAM wave to multiple waves, only one of which is Gaussian. The radiation direction of the Gaussian wave is distinguishable according to the order of incident OAM. Consequently, by locating the Gaussian wave, the incident OAM can be conveniently determined. We use a simple field source to simulate the incident OAM wave in full-wave simulation. It largely simplifies the simulation process when an incident wave carrying OAM is needed. Both numerical and full-wave simulation results are provided to validate our design, and they show good agreement with each other. Then, the metasurface is optimized for high directivity. Our work can provide an efficient and effective way for OAM detection in radio communications.
KW - Multiple orbital angular momentum (OAM)-beam detection
KW - OAM
KW - Transmissive metasurface
UR - http://www.scopus.com/inward/record.url?scp=85035757833&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2017.2777439
DO - 10.1109/LAWP.2017.2777439
M3 - Journal article
AN - SCOPUS:85035757833
SN - 1536-1225
VL - 17
SP - 110
EP - 113
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 1
M1 - 8119872
ER -