南敬昌,潘俊汝,高明明,等. 具有高隔离度的紧凑型三陷波UWB-MIMO天线设计[J]. 电波科学学报,2023,38(6):1105-1114. DOI: 10.12265/j.cjors.2022229
      引用本文: 南敬昌,潘俊汝,高明明,等. 具有高隔离度的紧凑型三陷波UWB-MIMO天线设计[J]. 电波科学学报,2023,38(6):1105-1114. DOI: 10.12265/j.cjors.2022229
      NAN J C, PAN J R, GAO M M, et al. Compact triple trap UWB-MIMO antenna design with high isolation[J]. Chinese journal of radio science,2023,38(6):1105-1114. (in Chinese). DOI: 10.12265/j.cjors.2022229
      Citation: NAN J C, PAN J R, GAO M M, et al. Compact triple trap UWB-MIMO antenna design with high isolation[J]. Chinese journal of radio science,2023,38(6):1105-1114. (in Chinese). DOI: 10.12265/j.cjors.2022229

      具有高隔离度的紧凑型三陷波UWB-MIMO天线设计

      Compact triple trap UWB-MIMO antenna design with high isolation

      • 摘要: 提出了一种具有高隔离度的紧凑型三陷波超宽带(ultra-wideband, UWB)多输入多输出(multiple-input multiple-output, MIMO)天线,整体尺寸为38 mm×26 mm×1.2 mm. 通过对辐射贴片底部两侧进行多切角,实现了宽带化;通过在接地板上加载改进的波纹T型去耦结构,并刻蚀倒“π”型槽缝隙,实现了较高隔离度;通过在辐射贴片上刻蚀“U”型缝隙、在馈线上刻蚀类“H”型缝隙以及在右侧引入倒“C”型寄生枝节,实现了WiMAX(3.3~3.6 GHz)、WLAN(5.15~5.85 GHz)和X波段(7.25~7.75 GHz)3个频段的陷波. 仿真与测试结果表明,该天线工作频段为2.9~11.3 GHz(相对带宽达到118.31%),隔离度小于−22.6 dB,包络相关系数小于0.01,辐射效率高,辐射特性良好,可以广泛应用于无线通信系统领域中.

         

        Abstract: A compact triple trap UWB-MIMO antenna with high isolation is proposed, with overall dimensions of 38 mm×26 mm×1.2 mm. A high degree of isolation is achieved by loading a modified corrugated T-shaped decoupling structure on the ground plate and etching an inverted “π” slot; a “U” slot is etched on the radiating patch, a class “H” slot is etched on the feed line, and an “H” slot is etched on the right-hand side. By etching a “U” slot on the radiating patch, etching a class “H” slit on the feed line, and introducing an inverted “C” parasitic branch on the right side, trapping in the WiMAX (3.3−3.6 GHz), WLAN (5.15−5.85 GHz) and X-band (7.25−7.75 GHz) bands are achieved. Simulation and test results show that the antenna works in the frequency band of 2.9 to 11.3 GHz (relative bandwidth reaches 118.31%), with isolation less than −22.6 dB, envelope correlation coefficient (ECC) less than 0.01, high radiation efficiency and good radiation characteristics, and the designed antenna can be widely used in the field of wireless communication systems.

         

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