NDLI: Frequency Scanning Dual-Mode Asymmetric Dual-OAM-Wave Generation Base on Broadband PB Metasurface

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Frequency Scanning Dual-Mode Asymmetric Dual-OAM-Wave Generation Base on Broadband PB Metasurface

Content Provider	MDPI
Author	Yu, Jiayu Zheng, Qiurong Tang, Xueqin He, Jie Liu, Jie Zhang, Bin Zou, Kun
Copyright Year	2022
Description	Increasing information capacity is significant for high-speed communication systems in a congested radio frequency sequence. Vortex waves carrying mode orthogonal orbital angular momentum (OAM) have gained considerable attention in recent years, owing to their multiplexing quality. In this study, a broadband Pancharatnam–Berry (PB) metasurface element with a simple structure is proposed, which exhibits an efficient reflection of the co-polarized component and a full 2π phase variation in 10.5–21.5 GHz under circularly polarized wave incidence. By convolution and addition operations, the elaborate phase distribution is arranged and the corresponding metasurface-reflecting dual-mode asymmetric dual-OAM waves is constructed. Under continuous control of the working frequency, the OAM vortex beams with the topological charges 1 and −1 are steered to scan within the angle range of 11.9°–24.9° and 17.9°–39.1° at φ = 315° and 135° planes, respectively. The simulation and measurement results verified the feasibility of generating frequency-controlled asymmetric dual beams and the validity of dual-mode OAM characteristics, both in the near and far fields. This design approach has considerable potential in OAM wave multiplexing and wireless communication system transmission.
Starting Page	1117
e-ISSN	2072666X
DOI	10.3390/mi13071117
Journal	Micromachines
Issue Number	7
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2022-07-15
Access Restriction	Open
Subject Keyword	Micromachines Telecommunications Microwave Passive Metasurface Vortex Beam Orbital Angular Momentum Broadband Pancharatnam–berry Phase Frequency Scanning Wave Manipulation
Content Type	Text
Resource Type	Article

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