Design and simulation of a metamaterial polarization-rotator wall for isolation improvement in SIW fed MIMO DRA for D-band applications

IF 2.9 4区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Nano Communication Networks Pub Date : 2024-07-06 DOI:10.1016/j.nancom.2024.100524

Emmanuel K. Chemweno, Pradeep Kumar, Thomas J.O. Afullo

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Abstract

In this research, a metamaterial polarization-rotator (MTMPR) wall is proposed for mutual coupling reduction in a $2 \times 2$ multiple-input multiple-output (MIMO) antenna. A substrate integrated waveguide (SIW) based dielectric resonator antenna (DRA) is the preferred topology for the D-band frequency antenna design. The antenna elements are closely packed to achieve high antenna integration. The effect of the proposed isolation technique on the bandwidth performance and radiation characteristics of the antenna is investigated. Simulation results show that the proposed antenna exhibits a −10 dB impedance bandwidth of 19.5% (136.68 GHz–166.28 GHz), a gain of 11.06 dBi and a high efficiency of 84%. The antenna radiates in the broadside direction, with an isolation performance greater than 21.16 dB across the entire bandwidth of operation. Diversity metrics are also evaluated, indicating low correlation between the antenna elements and suitability of the proposed design for MIMO applications.

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设计和仿真超材料偏振旋转壁，以改善 D 波段应用中 SIW 馈电多输入多输出 DRA 的隔离性能

本研究提出了一种超材料极化旋转器（MTMPR）壁，用于减少 2×2 多输入多输出（MIMO）天线中的相互耦合。基于基底集成波导（SIW）的介质谐振器天线（DRA）是 D 波段频率天线设计的首选拓扑结构。天线元件紧密排列，以实现天线的高集成度。研究了所提出的隔离技术对天线带宽性能和辐射特性的影响。仿真结果表明，该天线的-10 dB 阻抗带宽为 19.5%（136.68 GHz-166.28 GHz），增益为 11.06 dBi，效率高达 84%。该天线在宽边方向辐射，在整个工作带宽内的隔离性能大于 21.16 dB。此外，还对分集指标进行了评估，结果表明天线元件之间的相关性较低，所提设计适合多输入多输出应用。

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来源期刊

Nano Communication Networks Mathematics-Applied Mathematics

CiteScore

6.00

自引率

6.90%

发文量

期刊介绍： The Nano Communication Networks Journal is an international, archival and multi-disciplinary journal providing a publication vehicle for complete coverage of all topics of interest to those involved in all aspects of nanoscale communication and networking. Theoretical research contributions presenting new techniques, concepts or analyses; applied contributions reporting on experiences and experiments; and tutorial and survey manuscripts are published. Nano Communication Networks is a part of the COMNET (Computer Networks) family of journals within Elsevier. The family of journals covers all aspects of networking except nanonetworking, which is the scope of this journal.