Dielectric Metasurface for Generating Broadband Millimeter Wave Orbital Angular Momentum Beams
Fan Bi, Zhongling Ba, Yunting Li, and Xiong Wang
TL;DR
This paper introduces a broadband millimeter wave OAM generator using a dielectric metasurface, capable of producing OAM beams from 53 to 70 GHz, with potential applications in communications and imaging.
Contribution
The work presents a novel broadband millimeter wave OAM generator based on dielectric metasurfaces with adjustable element dimensions for wide frequency range operation.
Findings
Operates from 53 to 70 GHz
Designs validated by simulation
Potential for high-capacity communications
Abstract
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.
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Taxonomy
TopicsOrbital Angular Momentum in Optics · Metamaterials and Metasurfaces Applications · Advanced Antenna and Metasurface Technologies