一种高隔离度的微带双频MIMO天线设计

Design of a Dua-band Microstrip MIMO Antenna with High Isolation

摘要:

针对无线通信系统对高通信速率、高通信容量的需求,设计了一种高隔离度的双频多输入多输出(MultipleInputMultipleOutput,MIMO)天线。该MIMO 天线采用微带形式,选用弯折型单极子天线作为高频谐振单元,通过增加背面谐振单元引入低频谐振,实现了2.4GHz和5GHz双频工作,并采用在地板上开槽和在背面悬置金属线的方法解决了天线单元之间的互耦问题。仿真结果表明,天线的工作带宽、隔离度、增益、不圆度等参数均满足设计要求。

Abstract:

In order to meet the requirements of high communication rate and highcapacity in wireless communication system, a dual band multiple input multiple output(MIMO) antenna with high isolation is designed, The MIMO antenna adopts the microstripform and the bent monopole antenna is used as the high frequency resonant unit, By addingthe backside resonant unit to introduce the low frequency resonance the 2.4 GHz and 5 GHzdual-frequency operation is realized, Meanwhile, the mutual coupling between the antennaelements is solved by slotting on the floor and mounting metal wire on the backside. Thesimulation results show that the antenna parameters such as the bandwidth, isolation, gainand out of roundness meet the design requirements.