{"title":"用于空间和极化分集的 Q 波段环形极化多输入多输出天线","authors":"","doi":"10.1007/s10762-024-00979-w","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>The present work proposes three MIMO antennas with different configurations for the future applications of wireless communications in the Q-band of the frequency to realize both spatial and polarization diversities. A circularly polarized (CP) printed antenna operating over two frequency bands at 37.8 and 50 GHz is utilized as a single element to construct the proposed MIMO antennas. Two-element MIMO antenna systems arranged in two configurations, side-by-side and face-to-face, are proposed to achieve spatial diversity. Also, a four-element MIMO antenna system is designed to achieve polarization diversity in addition to spatial diversity. The proposed MIMO antenna systems are designed with the aid of the CST simulator. The three MIMO antennas are fabricated and their performance is experimentally evaluated regarding the circular polarization, impedance matching, antenna gain, envelope correlation coefficient (ECC), and diversity gain (DG). The experimental results for the single-element as well as the MIMO antennas come in good agreement with simulation results showing high performance. Both the numerical and experimental investigations reveal that the mutual coupling between any two ports of the proposed MIMO antennas is below <span> <span>\\(-25 {\\text{dB}}\\)</span> </span>. Also, for any two ports it is shown that the ECC is below <span> <span>\\(1\\times {10}^{-7}\\)</span> </span> and the diversity gain is higher than <span> <span>\\(9.99\\)</span> </span>. The impedance matching bandwidths (for <span> <span>\\(\\left|{S}_{11}\\right|<-10 {\\text{dB}}\\)</span> </span>) are shown to be <span> <span>\\(1.53\\)</span> </span> and <span> <span>\\(1.88\\)</span> </span> GHz at <span> <span>\\(37.8\\)</span> </span> and <span> <span>\\(50\\mathrm{ GHz}\\)</span> </span>, respectively, and the corresponding 3-dB axial ratio bandwidths are <span> <span>\\(700\\)</span> </span> and <span> <span>\\(130\\mathrm{ MHz}\\)</span> </span>, respectively.</p>","PeriodicalId":16181,"journal":{"name":"Journal of Infrared, Millimeter, and Terahertz Waves","volume":"74 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Q-Band MIMO Antennas with Circular Polarization for Spatial and Polarization Diversity\",\"authors\":\"\",\"doi\":\"10.1007/s10762-024-00979-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Abstract</h3> <p>The present work proposes three MIMO antennas with different configurations for the future applications of wireless communications in the Q-band of the frequency to realize both spatial and polarization diversities. A circularly polarized (CP) printed antenna operating over two frequency bands at 37.8 and 50 GHz is utilized as a single element to construct the proposed MIMO antennas. Two-element MIMO antenna systems arranged in two configurations, side-by-side and face-to-face, are proposed to achieve spatial diversity. Also, a four-element MIMO antenna system is designed to achieve polarization diversity in addition to spatial diversity. The proposed MIMO antenna systems are designed with the aid of the CST simulator. The three MIMO antennas are fabricated and their performance is experimentally evaluated regarding the circular polarization, impedance matching, antenna gain, envelope correlation coefficient (ECC), and diversity gain (DG). The experimental results for the single-element as well as the MIMO antennas come in good agreement with simulation results showing high performance. 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引用次数: 0
摘要
摘要 本作品针对 Q 频段无线通信的未来应用,提出了三种不同配置的多输入多输出(MIMO)天线,以实现空间和极化多样化。在 37.8 和 50 GHz 两个频段上工作的圆极化(CP)印刷天线被用作构建所建议的 MIMO 天线的单一元件。为实现空间分集,提出了并排和面对面两种配置的两元件 MIMO 天线系统。此外,还设计了一个四元件 MIMO 天线系统,以实现空间分集之外的极化分集。所提出的 MIMO 天线系统是借助 CST 仿真器设计的。制作了三个 MIMO 天线,并通过实验评估了它们在圆极化、阻抗匹配、天线增益、包络相关系数 (ECC) 和分集增益 (DG) 方面的性能。单元件和多输入多输出天线的实验结果与仿真结果非常吻合,显示出很高的性能。数值和实验研究都表明,所提出的 MIMO 天线任意两个端口之间的相互耦合都低于 \(-25 {text\{dB}}\) 。同时,对于任意两个端口,ECC低于(1乘以{10}^{-7}),分集增益高于(9.99)。阻抗匹配带宽(对于 \(\left|{S}_{11}\right|<-10 {\text{dB}}\) )分别为 \(1.53\) 和 \(1.88\) GHz,频率分别为 \(37.8\) 和 \(50\mathrm{ GHz}\) ,相应的 3-dB 轴向比带宽分别为 \(700\) 和 \(130\mathrm{ MHz}\) 。
Q-Band MIMO Antennas with Circular Polarization for Spatial and Polarization Diversity
Abstract
The present work proposes three MIMO antennas with different configurations for the future applications of wireless communications in the Q-band of the frequency to realize both spatial and polarization diversities. A circularly polarized (CP) printed antenna operating over two frequency bands at 37.8 and 50 GHz is utilized as a single element to construct the proposed MIMO antennas. Two-element MIMO antenna systems arranged in two configurations, side-by-side and face-to-face, are proposed to achieve spatial diversity. Also, a four-element MIMO antenna system is designed to achieve polarization diversity in addition to spatial diversity. The proposed MIMO antenna systems are designed with the aid of the CST simulator. The three MIMO antennas are fabricated and their performance is experimentally evaluated regarding the circular polarization, impedance matching, antenna gain, envelope correlation coefficient (ECC), and diversity gain (DG). The experimental results for the single-element as well as the MIMO antennas come in good agreement with simulation results showing high performance. Both the numerical and experimental investigations reveal that the mutual coupling between any two ports of the proposed MIMO antennas is below \(-25 {\text{dB}}\). Also, for any two ports it is shown that the ECC is below \(1\times {10}^{-7}\) and the diversity gain is higher than \(9.99\). The impedance matching bandwidths (for \(\left|{S}_{11}\right|<-10 {\text{dB}}\)) are shown to be \(1.53\) and \(1.88\) GHz at \(37.8\) and \(50\mathrm{ GHz}\), respectively, and the corresponding 3-dB axial ratio bandwidths are \(700\) and \(130\mathrm{ MHz}\), respectively.
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.