用于毫米波应用的双频(28/38 GHz)紧凑型MIMO天线系统

IF 1.8 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Rania R. Elsharkawy, Khalid.F. A. Hussein, Asmaa E. Farahat
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引用次数: 0

摘要

摘要:本文提出了一种用于现代和未来几代移动通信的28和38 GHz毫米波频率的双波段印刷天线的新设计。天线由两个辐射元件组成。第一个元件是主贴片,通过带插入馈电的微带线馈电,第二个元件是寄生元件,通过与主贴片的电容耦合馈电。通过完整的参数化研究,优化了天线的设计参数,在27.7 ~ 28.3 GHz频段和37.7 ~ 38.3 GHz频段上分别在28 GHz和38 GHz频段上实现了良好的阻抗匹配。研究了两种工作频率下的表面电流分布。设计的天线用于构建四端口高效多输入多输出(MIMO)系统。从包络相关系数(ECC)、分集增益(DG)和信道容量损失(CCL)三个方面对MIMO系统性能进行了研究,结果表明MIMO系统性能良好。制作了单单元天线和MIMO,并对其进行了实验评估,结果表明该天线在低频段和高频段阻抗匹配良好,与仿真结果一致。结果表明,该天线在28 GHz和38 GHz时的最大增益分别为7.4和8.1 dBi。该天线在低频段和高频段的平均辐射效率分别为88%和88.8%。此外,实验测量了MIMO天线系统之间的耦合系数,显示出非常低的耦合值,从而形成了适合未来毫米波应用的高效MIMO系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dual-Band (28/38 GHz) Compact MIMO Antenna System for Millimeter-Wave Applications

Dual-Band (28/38 GHz) Compact MIMO Antenna System for Millimeter-Wave Applications
Abstract The present work proposes a novel design of a dual-band-printed antenna for operation at the millimeter-wave frequencies 28 and 38 GHz that are utilized for the modern and future generations of mobile communications. The antenna is composed of two radiating elements. The first element is the main patch that is fed through a microstrip line with inset feed, and the second element is a parasitic element that is fed through capacitive coupling with the main patch. The design parameters of the proposed antenna are optimized through a complete parametric study to give excellent impedance matching at 28 GHz over the band 27.7–28.3 GHz and at 38 GHz over the band 37.7–38.3 GHz. The surface current distributions at the two operational frequencies are investigated. The designed antenna is used to construct a four-port efficient multi–input–multi–output (MIMO) system. The MIMO system performance is investigated regarding the envelope correlation coefficient (ECC), diversity gain (DG), and the channel capacity loss (CCL) showing very good performance. The single-element antenna and the MIMO are fabricated and experimentally evaluated showing excellent impedance matching over the lower and higher frequency bands, which come in agreement with the simulation results. It is shown that the antenna produces maximum gain of 7.4 and 8.1 dBi at 28 and 38 GHz, respectively. The average radiation efficiencies of the proposed antenna are 88% and 88.8% over the lower and higher frequency bands, respectively. In addition, the coupling coefficients between the MIMO antenna systems are measured experimentally showing very low coupling values resulting in an efficient MIMO system that is suitable for future millimeter-wave (mm-wave) applications.
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来源期刊
Journal of Infrared, Millimeter, and Terahertz Waves
Journal of Infrared, Millimeter, and Terahertz Waves 工程技术-工程:电子与电气
CiteScore
6.20
自引率
6.90%
发文量
51
审稿时长
3 months
期刊介绍: The Journal of Infrared, Millimeter, and Terahertz Waves offers a peer-reviewed platform for the rapid dissemination of original, high-quality research in the frequency window from 30 GHz to 30 THz. The topics covered include: sources, detectors, and other devices; systems, spectroscopy, sensing, interaction between electromagnetic waves and matter, applications, metrology, and communications. Purely numerical work, especially with commercial software packages, will be published only in very exceptional cases. The same applies to manuscripts describing only algorithms (e.g. pattern recognition algorithms). Manuscripts submitted to the Journal should discuss a significant advancement to the field of infrared, millimeter, and terahertz waves.
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