利用优化的超材料实现高隔离和波束倾斜性能的毫米波八木MIMO天线

IF 3.6 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2025-06-20 DOI:10.1109/ACCESS.2025.3581586

Bashar A. F. Esmail;Dustin Isleifson;Slawomir Koziel

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引用次数: 0

摘要

本文介绍了一种用于毫米波频谱的高性能多输入多输出（MIMO）天线，该天线具有宽带性能、高增益、优越的隔离性和波束倾斜功能。利用三阶模式偶极子作为集成反射器驱动的单八木天线设计用于28ghz频段以提高增益。采用严格的数值优化程序精确调整驱动偶极子、导向器和反射器的尺寸和位置。优化后的八木天线在28 GHz 5G频段内运行，提供2.6 GHz带宽。辐射方向图结果表明，天线在高谐振模式下的增益超过了传统的Yagi-Uda天线，在28 GHz时获得了9.35 dBi的增益。MIMO天线随后使用两个相邻的八木元素设计，在它们之间放置一个超材料阵列，以增强隔离和倾斜辐射束。利用信任区域（TR）方法来细化超材料的尺寸，在28 GHz时实现高达58 dB的隔离。此外，当在两个端口的激励之间切换时，该超材料使e -平面光束相对于端火方向倾斜33度。通过实验验证了该系统的有效性，仿真数据与实测数据具有较强的相关性。

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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Millimeter-Wave Yagi MIMO Antenna With High Isolation and Beam-Tilting Capability Using Optimized Metamaterials

A high-performance multiple-input-multiple-output (MIMO) antenna for the millimeter-wave spectrum is introduced in this paper, featuring broadband performance, high gain, superior isolation, and beam-tilting functionality. A single Yagi antenna, utilizing a third-order mode dipole as its driver with integrated reflectors, is designed for the 28 GHz band to enhance gain. The rigorous numerical optimization procedure was employed to precisely adjust the dimensions and positions of the driven dipole, director, and reflectors. The optimized Yagi antenna functions within the 28 GHz 5G band, offering a 2.6 GHz bandwidth. The radiation pattern results reveal that the antenna’s gain in this higher resonant mode exceeds that of a conventional Yagi-Uda antenna, achieving a gain of 9.35 dBi at 28 GHz. The MIMO antenna is subsequently designed using two adjacent Yagi elements, with a metamaterial array positioned between them to enhance isolation and tilt the radiation beam. The trust region (TR) method is utilized to refine the metamaterial’s dimensions, achieving up to 58 dB of isolation at 28 GHz. Additionally, the metamaterial enables a 33-degree E-plane beam tilting relative to the end-fire direction when switching between the two ports’ excitations. The system is validated through experiments, demonstrating a strong correlation between the simulated and measured data.

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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

期刊介绍： IEEE Access® is a multidisciplinary, open access (OA), applications-oriented, all-electronic archival journal that continuously presents the results of original research or development across all of IEEE''s fields of interest. IEEE Access will publish articles that are of high interest to readers, original, technically correct, and clearly presented. Supported by author publication charges (APC), its hallmarks are a rapid peer review and publication process with open access to all readers. Unlike IEEE''s traditional Transactions or Journals, reviews are "binary", in that reviewers will either Accept or Reject an article in the form it is submitted in order to achieve rapid turnaround. Especially encouraged are submissions on: Multidisciplinary topics, or applications-oriented articles and negative results that do not fit within the scope of IEEE''s traditional journals. Practical articles discussing new experiments or measurement techniques, interesting solutions to engineering. Development of new or improved fabrication or manufacturing techniques. Reviews or survey articles of new or evolving fields oriented to assist others in understanding the new area.