2018/01/19 by Fan Bi, Bi, Fan, Zhongling Ba +5
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Metamaterials and Metasurfaces Applications #Orbital Angular Momentum in Optics #physics.app-ph
paper · pdf · doi:10.48550/arxiv.1801.06303
8 pages, 6 figures
arxiv created 2018/01/19 · arxiv updated 2018/01/22
Electromagnetic waves carrying orbital angular momentum (OAM) have found many applications. This work reports a broadband millimeter wave OAM generator applying a dielectric metasurface with high-refractive-index dielectric elements distributed on a low-refractive-index substrate. Proper adjustment of the dimensions of the dielectric elements can make a broadband OAM generator from 53 to 70 GHz. OAM generators with different mode numbers are designed and validated by simulation. Such structures can find potential applications in high-capacity communications and imaging.