Directivity and Efficiency of the THz and FIR Smith-Purcell Radiation Phased Array Antenna Made of Graphene Nanotubes

IF 4.5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Selected Topics in Quantum Electronics Pub Date : 2026-03-01 Epub Date: 2026-07-27 DOI:10.1109/JSTQE.2026.3717216

Dariia O. Herasymova;Sergii V. Dukhopelnykov;Mario Lucido;Oleksandr I. Nosych

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引用次数: 0

Abstract

We consider radiation characteristics of a phased array meta-antenna composed of finite number of graphene nanotubes with low-permittivity dielectric cores, driven by a modulated beam of charged particles. Monolayer graphene’s properties are accounted for using the quantum Kubo formalism for its conductivity and resistive-sheet boundary conditions. By inverting analytically the single-tube part of the full problem, we cast it into a well-conditioned system of linear equations. This semi-analytical technique possesses guaranteed convergence and has high computational efficiency. Numerical results display the resonances on the plasmon modes of graphene tubes and the lattice modes of the grating near the Rayleigh Anomaly frequencies of similar infinite grating. We clarify the role of the number of nanotubes and their chemical potential. We show that the radiation efficiency is generally high, close to 100%, at all frequencies except the band around the frequency of the so-called invisibility effect, where the scattering has a deep minimum. The directivity is proportional to the number of grating elements and reaches maxima at the red side of the Rayleigh Anomalies.

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石墨烯纳米管太赫兹和FIR Smith-Purcell辐射相控阵天线的指向性和效率

本文研究了在调制的带电粒子束驱动下，由有限数量的具有低介电常数电芯的石墨烯纳米管组成的相控阵元天线的辐射特性。单层石墨烯的性质使用量子Kubo形式来解释其电导率和电阻片边界条件。通过对全问题的单管部分进行解析反演，将其转化为一个条件良好的线性方程组。这种半解析方法收敛性好，计算效率高。数值结果表明，石墨烯管的等离激元模式和光栅的晶格模式的共振频率接近类似无限光栅的瑞利异常频率。我们澄清了纳米管的数量和它们的化学势的作用。我们表明，在所有频率下，除了所谓的不可见效应的频率附近的波段外，辐射效率总体上是高的，接近100%，在那里散射有一个深最小值。指向性与光栅单元的数量成正比，并在瑞利异常的红色一侧达到最大值。

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

IEEE Journal of Selected Topics in Quantum Electronics 工程技术-工程：电子与电气

CiteScore

10.60

自引率

2.00%

发文量

212

审稿时长

3 months

期刊介绍： Papers published in the IEEE Journal of Selected Topics in Quantum Electronics fall within the broad field of science and technology of quantum electronics of a device, subsystem, or system-oriented nature. Each issue is devoted to a specific topic within this broad spectrum. Announcements of the topical areas planned for future issues, along with deadlines for receipt of manuscripts, are published in this Journal and in the IEEE Journal of Quantum Electronics. Generally, the scope of manuscripts appropriate to this Journal is the same as that for the IEEE Journal of Quantum Electronics. Manuscripts are published that report original theoretical and/or experimental research results that advance the scientific and technological base of quantum electronics devices, systems, or applications. The Journal is dedicated toward publishing research results that advance the state of the art or add to the understanding of the generation, amplification, modulation, detection, waveguiding, or propagation characteristics of coherent electromagnetic radiation having sub-millimeter and shorter wavelengths. In order to be suitable for publication in this Journal, the content of manuscripts concerned with subject-related research must have a potential impact on advancing the technological base of quantum electronic devices, systems, and/or applications. Potential authors of subject-related research have the responsibility of pointing out this potential impact. System-oriented manuscripts must be concerned with systems that perform a function previously unavailable or that outperform previously established systems that did not use quantum electronic components or concepts. Tutorial and review papers are by invitation only.