Design of SFMSIW MIMO antenna with low mutual coupling using notch filter

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

Aeu-International Journal of Electronics and Communications Pub Date : 2025-07-25 DOI:10.1016/j.aeue.2025.155968

Mansour H. Almalki , Mohammad Awedh , Mohammed N. Ajour , Avez Syed

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引用次数: 0

Abstract

In this work, the design of a Slotted Full-Mode Substrate-Integrated Waveguide (SFMSIW) MIMO antenna is presented for 5G applications, featuring low mutual coupling through the integration of a notch filter. The proposed antenna operates in the frequency band of 3.46 to 3.55 GHz, making it suitable for emerging mid-band IoT communication systems. The proposed antenna is miniaturized by incorporating a slot into the FMSIW structure while maintaining the desired gain, which is higher than that of a QMSIW antenna of the same size. Mutual coupling between the antenna elements is reduced by introducing an electric wall using SIW vias. Additionally, a notch filter (NF) is embedded into the MIMO antenna to further enhance isolation between the elements. The antenna is fabricated on an FR4 substrate and exhibits excellent performance, with an isolation improvement and a broadside gain of 3.2 dB at 3.5 GHz. The measured results show good agreement with the simulated data, validating the effectiveness of the proposed design.

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基于陷波滤波器的SFMSIW低互耦MIMO天线设计

在这项工作中，提出了一种用于5G应用的开槽全模基片集成波导（SFMSIW） MIMO天线的设计，通过集成陷波滤波器具有低互耦性。该天线工作在3.46至3.55 GHz频段，适用于新兴的中频物联网通信系统。该天线通过在FMSIW结构中加入一个插槽来实现小型化，同时保持所需的增益，这比相同尺寸的QMSIW天线要高。天线元件之间的相互耦合通过引入使用SIW过孔的电壁来减少。此外，陷波滤波器（NF）嵌入到MIMO天线中，以进一步增强元件之间的隔离。该天线是在FR4衬底上制造的，具有优异的性能，隔离性得到改善，在3.5 GHz时宽边增益为3.2 dB。实测结果与仿真数据吻合较好，验证了所提设计的有效性。

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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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.