王琰, 卞立安, 谢舒, 等. 一种小型化宽频带高隔离紧凑型MIMO天线设计[J]. 中国舰船研究, 2024, 19(X): 1–10. doi: 10.19693/j.issn.1673-3185.03551
引用本文: 王琰, 卞立安, 谢舒, 等. 一种小型化宽频带高隔离紧凑型MIMO天线设计[J]. 中国舰船研究, 2024, 19(X): 1–10. doi: 10.19693/j.issn.1673-3185.03551
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WANG Y, BIAN L A, XIE S, et al. Compact MIMO antenna with miniaturized wideband and high isolation[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–10 (in Chinese. doi: 10.19693/j.issn.1673-3185.03551
Citation: WANG Y, BIAN L A, XIE S, et al. Compact MIMO antenna with miniaturized wideband and high isolation[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–10 (in Chinese. doi: 10.19693/j.issn.1673-3185.03551
shu

一种小型化宽频带高隔离紧凑型MIMO天线设计

Compact MIMO antenna with miniaturized wideband and high isolation

    摘要
  • 摘要:
    目的 针对舰船通信装置安装空间受限且由于其他装备对信号产生干扰导致舰载天线通信效率低的问题，提出一种可覆盖宽频带的小型化高隔离紧凑型多输入多输出（MIMO）天线。
    方法 天线单元以一个椭圆贴片为基础，通过旋转平移扩展成最终的八角结构；四个单元正交放置在介质基板上，提高了天线的数据传输速率和信道容量；通过在天线的背面添加方片形金属贴片提高天线单元之间的隔离度，天线整体尺寸仅为32*32 mm2。
    结果 实测结果表明：S11≤−10 dB的阻抗带宽实测为3.4～10 GHz，天线的S31从−15 dB下降到−22 dB以下，最低低至−46 dB，隔离度提高了31 dB；天线包络相关系数小于0.05，分集增益大于9.7 dB；天线的最高增益可达4.5 dBi。
    结论 设计的MIMO天线在实现小型化的基础上可覆盖宽频带并拥有较高隔离度，具有抗干扰、信道容量高等特点，可以广泛应用于舰载无线通信设备中。

     

    Abstract:
    Objectives In order to solve the limitation of the installation space of shipboard communication devices and the low communication efficiency of shipborne antennas due to interference of signals by other equipment, a miniaturized and high-isolation compact MIMO antenna that can cover a wide frequency band is proposed.
    Methods The antenna unit is based on an elliptical patch that expands into the final octagonal structure by rotational translation; The four units are placed orthogonally on the dielectric substrate, which improves the data transmission rate and channel capacity of the antenna; By adding a square metal patch on the back of the antenna to improve the isolation between the antenna units, the overall size of the antenna is only 32*32 mm2.
    Results The measured results show that The impedance bandwidth of S11≤−10 dB is measured to be 3.4-10 GHz, the S31 of the antenna drops from about −15 dB to less than −22 dB, the lowest is as low as −46 dB, and the isolation is improved by 31 dB; the antenna envelope correlation coefficient is less than 0.05, the diversity gain is greater than 9.7 dB; the highest gain of the antenna can reach 4.5 dBi.
    Conclusions On the basis of miniaturization, the MIMO antenna can cover a wide frequency band and has a high degree of isolation, and has the characteristics of anti-interference and high channel capacity, which can be widely used in shipborne wireless communication equipment.

     

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