摘要
设计了一款能覆盖WLAN的2.45 GHz和5 GHz频段的紧凑型双频MIMO天线。天线由两个辐射单元组成,两个天线辐射单元结构相同且方向对称,采用了微带馈电的馈电方式。该MIMO天线单元为一个F型天线,两个分支分别谐振在低频和高频频段。在两个单元天线之间加入了两条I型的地板枝节和一条地板缝隙作为隔离结构,以对MIMO天线的隔离度进行优化改善,实现了天线的小型化。经实物测试结果表明,该天线覆盖在2.39~2.50 GHz和4.75~5.89 GHz两个工作频段,且所有工作频段的隔离度均小于-15 dB,在实际工程应用当中可以满足WLAN的要求。
A miniaturized dual-band MIMO antenna covering the WLAN′s 2.45 GHz and 5 GHz bands was designed.The antenna consists of two radiating elements.The two antenna radiating elements are identical in structure and symmetrical in direction,and a microstrip feeding mode is adopted.Two I-type floor branches and a floor gap are added between the two unit antennas as isolation structures to optimize the isolation of the MIMO antenna.The physical test results show that the antenna covers two working frequency bands of 2.39~2.50 GHz and 4.75~5.89 GHz,and the isolation of all working frequency bands is less than-15 dB.The WLAN requirements can be met in practical engineering applications.
作者
马天驰
杜成珠
焦哲晶
MA Tian-chi;DU Cheng-zhu;JIAO Zhe-jing(College of Electronics and Information Engineering,Shanghai University of Electric Power,Shanghai 200082,China)
出处
《仪表技术》
2019年第11期7-10,36,共5页
Instrumentation Technology
基金
国家自然科学基金资助项目(61371022)
上海市自然科学基金项目(16ZR1412900)
关键词
MIMO天线
双频天线
小型化
MIMO antenna
dual frequency antenna
miniaturization
