Al2O3 Ceramic-Based Swastika-Shaped Quad-Port MIMO antenna with diversity feature for 5.9 GHz intelligent transport systems applications

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-09-23 DOI:10.1016/j.aeue.2025.156052

Jayant Kumar Sahu, Anshul Gupta, Gouri Shankar Sharma

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引用次数: 0

Abstract

The proposed work presents a quad-port Circularly Polarized (CP) cylindrical Al₂O₃ ceramic-based Dielectric Resonator Antenna (DRA) designed for multiple-input multiple-output (MIMO) systems with pattern diversity, operating within the 5.2 GHz to 6.3 GHz frequency range. The antenna achieves an axial-ratio bandwidth (ARBW) of 5.86 GHz to 6.02 GHz, maintaining an AR below 3 dB. A hybrid rectangular slot configuration is employed for electromagnetic excitation, utilizing a microstrip line to optimize coupling with the Al₂O₃ ceramic. Pattern diversity is achieved by positioning two Al₂O₃-based DRA’s above the substrate and two below, generating 180-degree out-of-phase radiation patterns in upward and downward directions, effectively reducing correlation and enhancing diversity gain. The proposed design exhibits distinct directional radiation patterns, ensuring efficient signal coverage and mitigating interference in multipath-rich environments. Furthermore, polarization diversity is realized through complementary left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP) at oppositely oriented ports, improving signal quality and increasing channel capacity. The antenna demonstrates circular polarization, high isolation, diverse radiation patterns, and robust diversity performance, making it a promising candidate for intelligent transport system (ITS) applications and high-speed vehicular communications.

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具有分集特性的氧化铝陶瓷万字形四端口MIMO天线，用于5.9 GHz智能交通系统

提出了一种四端口圆极化（CP）圆柱形Al2O3陶瓷介质谐振器天线（DRA），设计用于具有模式分集的多输入多输出（MIMO）系统，工作在5.2 GHz至6.3 GHz频率范围内。该天线实现5.86 GHz ~ 6.02 GHz的轴比带宽（ARBW），使AR保持在3db以下。采用混合矩形槽结构进行电磁激励，利用微带线优化与Al2O3陶瓷的耦合。通过在衬底上方和下方分别定位两个基于al2o3的DRA，在上下方向上产生180度的异相辐射图，可以有效地降低相关性，提高多样性增益。所提出的设计显示出不同的定向辐射模式，确保有效的信号覆盖和减轻多路径丰富环境中的干扰。此外，极化分集通过对向端口的左圆极化（LHCP）和右圆极化（RHCP）互补实现，提高了信号质量，增加了信道容量。该天线具有圆极化、高隔离、多样化的辐射模式和强大的分集性能，使其成为智能交通系统（ITS）应用和高速车辆通信的有希望的候选者。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.