Easily extendable frequency tunable superwideband MIMO antenna for terahertz applications

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical and Quantum Electronics Pub Date : 2025-01-11 DOI:10.1007/s11082-024-07979-z

Swati Gaur, Sarthak Singhal, Mohammad Salim

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引用次数: 0

Abstract

An ultrathin tunable antenna element and its multiport configurations for superwideband multiple input multiple output applications are proposed in this paper. The antenna element geometry includes an annular ring-shaped monopole radiator, two ear-shaped ellipses, and a defected partial ground plane. A graphene sheet is placed at the antenna's back side to improve the lower frequency and to achieve tunability. It has an overall volume of 25 × 25 × 1.6 μm³ while operating over a frequency spectrum of 2.3–> 80 THz with a peak realized gain of ~ 12.5 dB with stable radiation patterns. Two-port MIMO configurations (spatial diversity and pattern diversity) with overall volume of 25 × 56.25 × 1.6 μm³ while operating from 0.9 THz to > 80 THz and 2.02 THz to > 80 THz respectively are also analyzed. In addition to this, the extended versions of the spatial diversity configuration to four and six element spatial diversity MIMO configurations with dimensions of 25 × 118.75 μm² and 25 × 181.25 μm² respectively are also analyzed. All MIMO configurations exhibit isolation > 15 dB at maximum frequencies, ECC < 0.035, CCL < 0.4b/s/Hz, MEG ~ − 3 dB and TARC < − 10 dB without utilizing any isolation technique. Due to their super wide operational bandwidth, these antenna topologies are ideal for a wide range of applications, such as Industry 4.0, 6G, and ultrathin devices/systems.

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易于扩展的频率可调超宽带MIMO天线太赫兹应用

提出了一种超薄可调谐天线单元及其多端口结构，用于超宽带多输入多输出应用。天线元件几何结构包括环形单极辐射器、两个耳形椭圆和有缺陷的部分接平面。石墨烯片被放置在天线的背面，以提高较低的频率并实现可调性。它的总体体积为25 × 25 × 1.6 μm3，工作频率为2.3 - 80太赫兹，峰值实现增益为~ 12.5 dB，辐射图稳定。分析了总体积为25 × 56.25 × 1.6 μm3、工作范围分别为0.9 ~ 80 THz和2.02 ~ 80 THz的双端口MIMO（空间分集和模式分集）配置。此外，还分析了空间分集配置的扩展版本，分别为尺寸为25 × 118.75 μm2和25 × 181.25 μm2的四元和六元空间分集MIMO配置。在不使用任何隔离技术的情况下，所有MIMO配置在最高频率下的隔离度为15 dB， ECC为0.035，CCL为0.4b/s/Hz， MEG为- 3 dB， TARC为- 10 dB。由于其超宽的操作带宽，这些天线拓扑非常适合广泛的应用，例如工业4.0,6G和超薄设备/系统。

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

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.