摘要
设计了一种高隔离度双频多输入多输出(MIMO)天线,该天线覆盖2.4 GHz和5 GHz无线局域网频带,可以应用于移动物联网之中。天线包含两个相同的辐射单元天线,采用微带馈电的方式进行馈电。单元天线使用单极子天线作为基本辐射器,其包含一根长的和短的单极子天线,分别谐振在低频和高频频段。通过在两个单元天线中间加载T型隔离器提高了单元天线之间的隔离度。天线的辐射振子、馈电以及T型隔离器都印刷在同一块微波板材上,从而方便了天线的制作和加工。仿真结果表明,该天线在1.9~2.8 GHz以及4.7~6.2 GHz频带范围内能实现良好的双频工作特性,天线隔离度近20 d B,可以广泛应用于物联网系统中。
A high isolation dual frequency Multiple-Input Multiple-Output （MIMO） antenna is designed, which covers 2.4 GHz and 5 GHz wireless Local Area Network （LAN） bands and can be used in mobile Internet of Things （ IOT）. The antenna contains two identical radiating element antennas,which are fed with microstrip feed. The unit antenna uses a monopole antenna as a basic radiator,which contains a long and a short monopole antenna that resonates in the low frequency and high frequency bands, respectively. The isolation between the unit antennas is improved by loading the T-type isolator in the middle of the two unit antennas. The antenna＇s radiator,feed and T-type isolators are printed on the same microwave plate, thus facilitating the production and processing of the antenna. The simulation results show that the antenna can achieve good dual-band operation in 1.9 ？2. 8 GHz and 4. 7 ？ 6. 2 GHz with the two-unit antenna i-solation of nearly 20 dB in the 2. 4 GHz and 5 GHz bands. The designed antenna can be widely used in the IOT systems.
出处
《电讯技术》
北大核心
2018年第2期210-213,共4页
Telecommunication Engineering
基金
国家自然科学基金资助项目(61503017)
关键词
物联网
双频天线
MIMO天线
高隔离度
Intenet of Things（ IOT）
dual-band antenna
MIMO antenna
high isolation
