Generation of multiple beams carrying different orbital angular momentum modes based on anisotropic holographic metasurfaces in the radio-frequency domain

• DOI: 10.1063/1.5087994
• Publication Date: 2019-03-07T16:48:14Z
• Authors: Xiangshuai Meng; Jiaji Wu; Zhensen Wu; Lin Yang; Li Huang; Xi Li; Tan Qu; Zhe Wu
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

In this paper, an anisotropic holographic metasurface design is proposed, fabricated, and measured, to demonstrate that it can generate multiple beams with different orbital angular momentum (OAM) modes in the radio-frequency domain. The composed of array quasi-periodic square particles a rectangular slot upper metallic layer covered dielectric ground. classic leaky-wave theory microwave holography method are introduced construct holograms interfere surface waves excited by monopole antenna objective represented desired carrying OAM modes. Moreover, numerical simulations experimental results very good agreement, which demonstrates excellent performance provides generating simultaneously. This lays solid foundation for channel-multiplexing based on OAM-mode multiplexing expand capacity wireless communication systems.