Isolation improvement between two tightly coupled QMSIW MIMO antenna elements using spoof surface plasmon polariton structure

IF 1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2024-10-29 DOI:10.1002/mop.70017

Priya Kumari, Sushrut Das

引用次数: 0

Abstract

A spoof surface plasmon polariton superstrate structure-based decoupling method is proposed in this paper to reduce mutual coupling between two tightly coupled quarter-mode substrate integrated waveguide antenna elements. This superstrate is a periodic structure suspended over the antenna elements with an inter-element spacing of 0.02 λ₀ (1 mm) at 6 GHz. It has been demonstrated that the isolation can be improved from 6.5 dB to more than 39 dB within the operation band in measurement. Further, it has been shown that the proposed method can improve both the total efficiency (by 25%) and gain (1.4 dBi) of the multiple-input multiple-output antenna.

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利用欺骗性表面等离子体极化子结构改善两个紧密耦合的 QMSIW MIMO 天线元件之间的隔离度

本文提出了一种基于欺骗性表面等离子体极化子叠层结构的去耦方法，以减少两个紧密耦合的四分之一模衬底集成波导天线元件之间的相互耦合。这种叠层是一种悬浮在天线元件上的周期性结构，元件间距为 0.02 λ0 (1 mm)，频率为 6 GHz。测量结果表明，在工作频带内，隔离度可从 6.5 dB 提高到 39 dB 以上。此外，研究还表明，所提出的方法可以提高多输入多输出天线的总效率（25%）和增益（1.4 dBi）。

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

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication