Reflective metasurface for generating vortex wave in ultra-wideband

Dong, Xiaohang; Sun, Haibo; Gu, Changzhi; Xu, Bo; Wang, Kuan; Li, Zhuo

doi:10.1109/isemc.2018.8393961

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although fruitful progress has been achieved toward OAM across both optical and radio frequency domains, vortex wave generation are mostly limited to a narrow frequency band. An efficient and simple reflective metasurface array that can generate vortex wave with arbitrary single-mode in ultra-wideband from 18 to 42 GHz has been designed [8] (as shown in Figure 8).…”

Section: Vortex Beammentioning

confidence: 99%

Coding Metasurfaces and Applications

Sun¹,

Gu²,

Li³

et al. 2019

Metamaterials and Metasurfaces

Self Cite

View full text Add to dashboard Cite

Metasurfaces are the planar counterparts of metamaterials, and they consist of a singlelayer or a few-layers stack of planar structures, which can be fabricated using lithography and nanoprinting methods. Such artificial structures are usually described by effective medium parameters at the macroscopic scale. In this chapter, we deal with "coding metasurfaces," composed of only two types of unit cells, with 0 and π phase responses, from which electromagnetic (EM) waves can be manipulated and different functionalities can be realized. We review the recent progress in the physics of metasurfaces operating at wavelengths ranging from microwave to visible. We provide an overview of key metasurface concepts, such as diffusion, anomalous reflection and refraction, and introduce metasurfaces based on some optimization methods to design metasurfaces, as well as their use in wave-front shaping and beam-forming applications, followed by a discussion of polarization conversion in few-layer metasurfaces and their related properties. An overview of diffusion coding metasurface reveals their ability to realize unique functionalities to reduce the radar cross-section (RCS). We also describe diffusion coding metasurfaces that can improve the field uniformity in reverberation chambers. Finally, we conclude by providing our opinions on opportunities and challenges in this rapidly developing research field.

show abstract

Section: Vortex Beammentioning

confidence: 99%