摘要
设计了一种紧凑的双极化超宽带MIMO天线。该天线由一个六边形的贴片组成,它具有结构紧凑、体积小的特点。在六边形的地板平面上接一个矩形垂直臂,实现了35%的3 dB轴比带宽以及两个端口之间的隔离。在矩形垂直臂中加入两个L型散热器,提高了隔离度,这种双极化的MIMO天线可以减少多径衰落的影响。测量结果表明:该天线在超宽带频带内保持良好的全向辐射特性,天线增益小于5 dBi,隔离比大于15 dB,包络相关系数(ECC)小于0.01,该天线可以应用于超宽带无线通信系统。
A compact dual-polarized MIMO antenna was designed for ultra broadband.The antenna consists of a hexagonal patch,and it has the characteristics of compact structure and small size.A rectangular vertical arm is attached to the ground plane of the hexagon.The 3 dB axial ratio bandwidth of 35%along with isolation between two ports is achieved by introducing the rectangular vertical arm.To enhance the isolation,two L-shaped radiators are incorporated in the rectangular vertical arm.This dual-polarized MIMO antenna can reduce the impact of multipath fading.The measurement results show that the antenna keeps good omnidirectional radiation characteristics in UWB frequency band.The antenna gain is less than 5 dBi,the isolation ratio is greater than 15 dB,and the envelope correlation coefficient(ECC)is less than 0.01.The antenna can be applied in UWB wireless communication system.
作者
王荣荣
刘明伟
WANG Rongrong;LIU Mingwei(Xijing University,Xi’an 710123,China;Xi'an Jiaotong University,Xi’an 710010,China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2018年第4期75-78,共4页
Electronic Components And Materials
基金
国家自然科学基金(61473237)
