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A compact dual-port UWB-MIMO antenna with quadruple band-notched characteristics
AEU - International Journal of Electronics and Communications ( IF 3.2 ) Pub Date : 2021-04-21 , DOI: 10.1016/j.aeue.2021.153770
Shuang Luo , Daiqiang Wang , Yuqing Chen , Ershi Li , Chong Jiang

A compact dual-port ultra-wideband multiple-input multiple-output (UWB-MIMO) antenna with quadruple rejection bands is presented. The oversize of the proposed antenna is 39mm×30mm×0.8mm, which consists of two identical antenna elements with microstrip-fed and a common ground plane. A rectangular strip with the size of 10mm×22mm and two concave grooves are introduced in common ground plane to broaden the impedance bandwidth and enhance the isolation. The band-notched at 5.2–5.51 GHz and 6.1–6.53 GHz can be obtained by etching two various U-shaped slots on radiating patches. Moreover, by adding two different sizes of U-shaped parasitic strips on both sides of each feed lines, band suppression characteristics at 7.37–7.8 GHz and 9.15–9.7 GHz are achieved. Simulated results indicate that each center frequency of band-notched can be tuned by changing the size of its structure without affecting other notches. Besides, the equivalent circuit model of the designed antenna is analyzed. The proposed antenna is fabricated and measured. The measured results show that the designed antenna has a wide bandwidth ranging from 3.0–11.0 GHz with four rejection bands, low mutual coupling is less than −20 dB, stable radiation patterns, and envelope correlation coefficient (ECC) is less than 0.02.



中文翻译:

具有四频带陷波特性的紧凑型双端口UWB-MIMO天线

提出了一种具有四倍抑制频带的紧凑型双端口超宽带多输入多输出(UWB-MIMO)天线。建议的天线尺寸过大39毫米×30毫米×0.8毫米,它由两个相同的天线元件组成,带有微带馈电和一个公共接地层。大小为10毫米×22毫米在公共接地平面上引入两个凹槽,以扩大阻抗带宽并增强隔离度。可以通过在辐射贴片上刻蚀两个不同的U形槽来获得5.2–5.51 GHz和6.1–6.53 GHz处的带凹口。此外,通过在每条馈线的两侧添加两个不同大小的U形寄生带,可以实现7.37–7.8 GHz和9.15–9.7 GHz的频带抑制特性。仿真结果表明,可以通过改变带隙的结构大小来调整带隙的每个中心频率,而不会影响其他的陷波。此外,还分析了设计天线的等效电路模型。所提出的天线已制成并测量。测量结果表明,设计的天线具有3.0-11.0 GHz的宽带宽,具有四个抑制频带,

更新日期:2021-04-29
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