High-performance 5.5 THz coplanar waveguide-fed circular dielectric resonator antenna: a dual-band solution for advanced THz applications

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2024-11-16 DOI:10.1007/s11082-024-07817-2

Perinbaraj Rathinakumar, K Vijayalakshmi

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Abstract

An improved circular dielectric resonator antenna (CDRA) with a gain of 5.5 THz and excitation via a keyhole-shaped coplanar waveguide (CPW) is detailed in this research. The structure's feed and ground materials are silver, the substrate is silicon dioxide, and the dielectric resonator antenna (DRA) is silicon. The DRA is 5 μm in radius and 15 εm in height, and it is placed on a substrate that is 90 × 90 × 20 μm in size. An S11 value of –16.328 dB and a principal resonant frequency of 5.5 THz indicate that the antenna matches impedances admirably and scatters signals with minimal effect. Furthermore, the possibility of dual-band operation is demonstrated by a secondary resonance at 8.6 THz with an S11 of –6.7614 dB. With an operational bandwidth centered on 5.6 THz and a range of 5.0–6.2 THz, it is highly adaptable and may be used for a variety of applications. With a radiation efficiency of 68% and a peak gain of around 19 dB, this antenna exhibits a multi-lobe radiation pattern that is both highly gainful and highly directed. Phased array antennas, terahertz imaging systems, and autonomous vehicles and unmanned aerial vehicles (UAVs) can all benefit from these. Antenna performance is improved due to the creation of orthogonal and higher-order modes, which increase radiation efficiency and lead to high gain.

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高性能 5.5 THz 共面波导馈电圆介质谐振器天线：先进 THz 应用的双频解决方案

本研究详细介绍了一种增益为 5.5 太赫兹、通过键孔形共面波导 (CPW) 进行激励的改进型圆形介质谐振器天线 (CDRA)。该结构的馈电和接地材料为银，衬底为二氧化硅，介质谐振器天线（DRA）为硅。DRA 半径为 5 μm，高度为 15 εm，放置在尺寸为 90 × 90 × 20 μm 的基板上。S11 值为 -16.328 dB，主谐振频率为 5.5 THz，这表明该天线能很好地匹配阻抗，并以最小的影响散射信号。此外，8.6 THz 的次级谐振频率（S11 为 -6.7614 dB）也证明了双频工作的可能性。它的工作带宽以 5.6 太赫兹为中心，范围在 5.0-6.2 太赫兹之间，具有很强的适应性，可用于多种应用。该天线的辐射效率为 68%，峰值增益约为 19 dB，具有高增益和高指向性的多叶辐射模式。相控阵天线、太赫兹成像系统以及自动驾驶汽车和无人机（UAV）都能从中受益。正交和高阶模式的产生提高了辐射效率并带来高增益，从而改善了天线性能。

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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.