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Four-element MIMO antenna for X-band applications
International Journal of Microwave and Wireless Technologies ( IF 1.4 ) Pub Date : 2021-01-07 , DOI: 10.1017/s1759078720001440
Ali Eslami , Javad Nourinia , Changiz Ghobadi , Majid Shokri

This study presents a new design of a four-element multiple-input multiple-output (MIMO) antenna, which is suitable for X-band applications. The circular polarization (CP) operation in this work is attained by using Tai Chi-shaped patches and L-shaped feeds. The proposed four-element MIMO antenna achieves two resonant frequencies, the first one at around 7.75 GHz and the second one with CP radiation is at approximately 10.15 GHz frequency. The measured isolations between ports with 46.7 × 46.7 mm2 total dimensions are <−20 dB. Due to the experiments, the envelop correlation coefficient for the orthogonal and parallel ports of the proposed MIMO antenna is <0.003 and 0.005, respectively. Additionally, the presented antenna has a circularly polarized performance in the frequency band of 9.75–10.41 GHz and the average realized peak gain almost 2 dBic. The investigated antenna in this work is fabricated and tested in which the results are in a good agreement.

中文翻译:

用于 X 波段应用的四元件 MIMO 天线

本研究提出了一种适用于 X 波段应用的四元件多输入多输出 (MIMO) 天线的新设计。这项工作中的圆极化 (CP) 操作是通过使用太极形贴片和 L 形馈电来实现的。所提出的四元件 MIMO 天线实现了两个谐振频率,第一个在 7.75 GHz 左右,第二个具有 CP 辐射的频率在大约 10.15 GHz 频率。46.7 × 46.7 mm 端口之间的测量隔离度2总尺寸 <-20 dB。由于实验,所提出的 MIMO 天线的正交和并行端口的包络相关系数分别为 <0.003 和 0.005。此外,所提出的天线在 9.75-10.41 GHz 频带内具有圆极化性能,平均实现峰值增益接近 2 dBic。在这项工作中研究的天线是制造和测试的,结果非常吻合。
更新日期:2021-01-07
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