面向5G应用的柔性毫米波MIMO天线设计

Design of a Flexible Millimeter-Wave MIMO Antenna for 5G Applications

  • 摘要: 目的为解决舰船通信容量不足、抗干扰能力弱以及空间利用率低的问题,设计了一种适用于5G通信的柔性毫米波多输入多输出(MIMO)天线。方法将天线单元依次正交排列至柔性聚对苯二甲酸乙二醇酯(PET)介质基板上,整体尺寸为68 mm×68 mm×0.12 mm,通过采用共面波导(CPW)馈电技术,成功覆盖5G毫米波通信的关键频谱范围。天线原型通过丝网印刷铜导电浆料制备,具有优异的柔性和机械稳定性。结果仿真与测试结果表明,该天线工作频段为26~32 GHz,隔离度低于−36 dB,天线包络相关系数小于0.00015,分集增益大于9.999 dB。结论所提天线利用毫米波频段的高带宽特性与MIMO技术的多流传输能力,显著提升通信性能;其柔性设计便于舰船复杂环境中的灵活部署,优化信号覆盖与空间利用率,为舰船通信系统提供高效、可靠的解决方案。

     

    Abstract: Objectives To address the issues of insufficient communication capacity, weak anti-interference capability, and low space utilization in ship communications, a flexible millimeter-wave multiple-input multiple-output (MIMO) antenna suitable for 5G communication was designed. Methods The antenna elements were orthogonally arranged on a flexible polyethylene terephthalate (PET) substrate, with an overall size of 68mm×68mm×0.12mm. By employing coplanar waveguide (CPW) feeding technology, the antenna successfully covered the key frequency range of 5G millimeter-wave communication. The antenna prototype was fabricated using screen-printed copper conductive paste, exhibiting excellent flexibility and mechanical stability. Results Simulation and test results showed that the antenna operated in the frequency band of 24~32.63GHz, with an isolation level below -36dB, an envelope correlation coefficient of less than 0.00015, and a diversity gain greater than 9.999dB. Conclusions The proposed antenna leverages the high bandwidth characteristics of the millimeter-wave frequency band and the multi-stream transmission capability of MIMO technology, significantly enhancing communication performance. Its flexible design facilitates flexible deployment in complex ship environments, optimizing signal coverage and space utilization, and providing an efficient and reliable solution for ship communication systems.

     

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