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    您現在所在的位置:首頁» 新聞網» 科研學術» 正文

    北理工在超材料提升5G MIMO天線系統性能方面取得研究進展

    供稿: 信息與電子學院 攝影: 信息與電子學院 編輯: 曹安琪
    (2019-07-05) 閱讀次數:
    【字號  大

      近日,北京理工大學信息與電子學院司黎明副教授,碩士研究生江海鑫,呂昕教授與華東師范大學信息科學技術學院丁軍研究員利用超寬帶各向異性超材料提升5G MIMO天線系統性能,在非常近的距離(1mm)下抑制了MIMO天線間互耦,同時增加5G MIMO天線系統的工作帶寬和輻射增益。相關結果以“Broadband extremely close-spaced 5G MIMO antenna with mutual coupling reduction using metamaterial-inspired superstrate”為題,發表于《光學快訊》 [Optics Express, 27, 3472-3482 (2019)].

    加載超材料前后磁場H、坡印廷矢量S、電場E近場分布示意圖

      隨著移動通信數據業務的爆炸式增長,全世界各國政府都在大力推進高速率、低時延、高容量的第五代(5G)移動通信技術的研發與應用。多入多出(MIMO)技術是指在發射端和接收端使用多個天線,通過時空處理技術,實現分集增益或復用增益,可以充分利用空間和頻譜資源,是5G通信系統中的一項關鍵核心技術。為了適應5G通信系統日益小型化、高容量的需求,需要在一定的空間內放置盡可能多的天線數目,但是隨著工作頻率的提高和多天線技術的應用,5G MIMO天線存在電磁耦合高和無線信道干擾強的挑戰。

    研制的極近距離的各向異性超材料5G MIMO天線測試性能

      超材料是由人工設計的復合材料,具有一些天然材料所不具備的超常物理性質,該團隊設計了具有超寬帶超材料提升5G MIMO天線系統性能,通過將超材料結構放置在5G MIMO天線的上方做為覆蓋層,在極近的天線距離(1毫米,即0.017個波長)下實現了良好的耦合抑制效果,同時增加了5G MIMO天線的工作帶寬和輻射增益,并制造實物實驗驗證了理論分析的正確性。該項工作為實現寬帶近距離的5G MIMO天線小型化系統提供了新的思路。

      相關論文鏈接:https://doi.org/10.1364/OE.27.003472


    (審核:薛正輝)

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