Terahertz beam shaping using space-time phase-only coded metasurfaces

IF 2.9 4区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Nano Communication Networks Pub Date : 2024-10-18 DOI:10.1016/j.nancom.2024.100548

Sahar Solati Masouleh, Seyed Ehsan Hosseininejad

引用次数: 0

Abstract

Digital metasurfaces as space-coded surfaces composed of a set of sub-wavelength meta-atoms enable extraordinary capabilities to manipulate electromagnetic waves. Recently, amplitude-phase-joint-coding metasurfaces have been proposed to achieve enhanced beam shaping. However, design of a unit cell structure with a full manipulation of amplitude and phase of the reflected beam is challenging and this kind of unit cell structures are complicated. This paper proposes a space-time phase-only metasurface based on simple graphene-based unit cell that is digitally coded and arranged with a specific time sequence, allowing the effective simultaneous manipulation of both phase and amplitude. In this way, it is demonstrated that the terahertz beam can be shaped using the proposed metasurface.

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使用仅时空相位编码元曲面进行太赫兹波束赋形

数字元表面是由一组亚波长元原子组成的空间编码表面，具有操纵电磁波的非凡能力。最近，人们提出了振幅相位连接编码元表面，以实现增强的波束赋形。然而，设计一种能完全操纵反射光束的振幅和相位的单元格结构具有挑战性，而且这种单元格结构比较复杂。本文提出了一种基于简单石墨烯单元格的时空纯相位元表面，该单元格通过数字编码和特定时间序列排列，可有效地同时操纵相位和振幅。通过这种方法，证明了太赫兹光束可以利用所提出的元面进行塑形。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Communication Networks Mathematics-Applied Mathematics

CiteScore

6.00

自引率

6.90%

发文量

期刊介绍： The Nano Communication Networks Journal is an international, archival and multi-disciplinary journal providing a publication vehicle for complete coverage of all topics of interest to those involved in all aspects of nanoscale communication and networking. Theoretical research contributions presenting new techniques, concepts or analyses; applied contributions reporting on experiences and experiments; and tutorial and survey manuscripts are published. Nano Communication Networks is a part of the COMNET (Computer Networks) family of journals within Elsevier. The family of journals covers all aspects of networking except nanonetworking, which is the scope of this journal.