@inproceedings{5be1cd4fbbc94f95ad1166cbf4bba945,
title = "An efficient planar meta-lens as converged vortex beam generator in microwave region",
abstract = "In this paper, single-layer transmission-type metalens is proposed to generate a converged vortex beam. A new meta-lens design is used to generate the vortex beam, in which the required accumulated phase difference along the propagation path is realized by designing and arranging artificial single-layer unit cells. Furthermore, the converged vortex beam is generated theoretically and experimentally by metasurface that superimposes the phase distribution for the vortex beam and converged beam. The transmitted efficiency of the meta-lens can reach 20\% as designed, which approaches to the efficiency limit of this type of metasurface.",
keywords = "Metasurface, Microwave, Phase discontinuities, Vortex beam",
author = "Qun Wu and Yueyi Yuan and Xumin Ding and Kuang Zhang",
note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 6th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 ; Conference date: 16-10-2017 Through 19-10-2017",
year = "2018",
month = jul,
day = "25",
doi = "10.1109/APCAP.2017.8420829",
language = "英语",
series = "2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1--3",
booktitle = "2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding",
address = "美国",
}