[关键词]
[摘要]
该文设计了一款具有单陷波特性的高隔离超宽带(UWB)四单元多输入多输出(MIMO)天线。天线的尺寸为65 mm×65 mm×0.8 mm。4个槽天线单元水平正交放置,采用易加工集成的共面波导(CPW)馈电,引入缺陷地及十字隔离枝节去耦。通过在天线辐射贴片上刻蚀一个U 形槽,在4.35~6.08 GHz处产生陷波,能阻止WLAN(5.15~5.825 GHz)的通信干扰。经实测,该天线的工作频段为2.46~10.6 GHz,隔离度＜-20 dB,在4.35~6.08 GHz产生覆盖WLAN 的阻带,包络相关系数＜0.02,分集增益＞9.998,实测性能良好。该天线能够广泛应用于UWB-MIMO 通信系统。
[Key word]
[Abstract]
This study presents the design of a high-isolation ultra-wideband (UWB) four-element multiple input
multiple output (MIMO) antenna with a single notched band.The dimensions for this antenna are 65 mm×65 mm
×0.8 mm.The four slot antenna units are placed horizontally and orthogonally, and the antenna is fed by a coplanar
waveguide, facilitating ease of manufacture and integration.The defect ground and cross isolation branches are used
for decoupling.Furthermore, a U-shaped slot is etched on the antenna radiation patch to create a notched band at
4.35-6.08 GHz, which effectively suppresses WLAN communication interference (5.15-5.825 GHz).The measured
operating band of the proposed antenna is 2.46-10.6 GHz, with an isolation level of less than -20 dB.The
notched band is generated at 4.35-6.08 GHz, which effectively suppresses the WLAN interference.Additionally,
the envelope correlation coefficient is maintained below 0.02, and the diversity gain exceeds 9.998.The measured
performance is robust, demonstrating significant potential for extensive application in UWB-MIMO communication
systems.
[中图分类号]
TN822
[基金项目]
