Low-profile miniaturized wideband circularly polarized monopole and MIMO antennas using characteristic mode analysis for wireless communication

IF 1.6 4区地球科学 Q3 ASTRONOMY & ASTROPHYSICS

Radio Science Pub Date : 2024-09-01 DOI:10.1029/2024RS008030

Z. Ding;J. Cao;J. Yu;Nasimuddin Nasimuddin;M. Y. Chia;S. Fei;H. Wang

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引用次数: 0

Abstract

Low-profile miniaturized wideband circularly polarized (CP) monopole and multiple-input-multiple-output (MIMO) antennas using characteristic mode analysis (CMA) are presented. The antennas are constructed with a microstrip feeding line, a slot, and a branch, which positions the transmission line perpendicularly to the branch to achieve CP. The CP characteristic is realized through a characteristic angle (CA) difference of approximately 90° at three mode significance (MS) intersections across four modes. CMA provides both theoretical analysis and design guidance for these antennas. The antennas were fabricated and tested, with dimensions of 0.48λ 0 × 0.48λ 0 × 0.03λ 0 and 0.47λ 0 × 0.47λ 0 × 0.03λ 0 , where λ 0 represents the freespace wavelength. Measurements indicate that the monopole antenna achieves a —10 dB impedance bandwidth (IBW) from 3.2 to 8.4 GHz (89.7% relative bandwidth), a 3 dB axial ratio bandwidth (ARBW) from 3.6 to 5.1 GHz (34.5%), and a peak gain of 6.6 dBic. The MIMO antenna has a —10 dB IBW from 3.1 to 8.2 GHz (90.3%), a 3 dB ARBW from 3.2 to 6 GHz (60.9%), and a peak gain of 5.1 dBic. Both antennas feature a low profile, ultra-wideband IBW, broadband ARBW, and miniaturized design, making them suitable for wideband wireless communication applications.

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利用特性模式分析实现用于无线通信的小型化宽带圆极化单极和多输入多输出天线

本文介绍了使用特征模态分析（CMA）技术的低剖面小型化宽带圆极化（CP）单极子和多输入多输出（MIMO）天线。天线由一条微带馈电线、一个槽和一个支路构成，使传输线垂直于支路以实现 CP。CP 特性是通过四种模式的三个模式意义（MS）交叉处约 90° 的特性角（CA）差来实现的。CMA 为这些天线提供了理论分析和设计指导。天线已制作完成并进行了测试，尺寸分别为 0.48λ0 × 0.48λ0 × 0.03λ0 和 0.47λ0 × 0.47λ0 × 0.03λ0，其中 λ0表示自由空间波长。测量结果表明，单极天线在 3.2 至 8.4 GHz 范围内实现了 -10 dB 阻抗带宽 (IBW)（89.7% 相对带宽），在 3.6 至 5.1 GHz 范围内实现了 3 dB 轴向比带宽 (ARBW)（34.5%），峰值增益为 6.6 dBic。多输入多输出天线在 3.1 至 8.2 千兆赫（90.3%）范围内具有 -10 dB IBW，在 3.2 至 6 千兆赫（60.9%）范围内具有 3 dB ARBW，峰值增益为 5.1 dBic。这两款天线都具有外形小巧、超宽带 IBW、宽带 ARBW 和小型化设计等特点，适用于宽带无线通信应用。

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

Radio Science 工程技术-地球化学与地球物理

CiteScore

3.30

自引率

12.50%

发文量

112

审稿时长

1 months

期刊介绍： Radio Science (RDS) publishes original scientific contributions on radio-frequency electromagnetic-propagation and its applications. Contributions covering measurement, modelling, prediction and forecasting techniques pertinent to fields and waves - including antennas, signals and systems, the terrestrial and space environment and radio propagation problems in radio astronomy - are welcome. Contributions may address propagation through, interaction with, and remote sensing of structures, geophysical media, plasmas, and materials, as well as the application of radio frequency electromagnetic techniques to remote sensing of the Earth and other bodies in the solar system.