摘要
文中设计一种具有高隔离度的双频MIMO天线。将两款宽带毫米波天线垂直正交地放置于FR-4介质基板上,得到结构紧凑的双端口极化分集天线和四端口MIMO天线,利用其相互正交的极化方式提高了相邻端口间的隔离度。为了满足双频特性,分别在两天线单元的辐射贴片上刻蚀半圆环形和U形缝隙,地面开了长方形槽。通过HFSS仿真分析表明,所设计的天线可工作在28 GHz(24.5～29 GHz)和39 GHz(36～47 GHz),且在工作频段内具有较好的辐射特性,相邻端口间的隔离度达到了30 dB以上。同时,在天线上方加载了4根金属条作为引向器,提高了天线的增益。
A dual-band MIMO antenna with high isolation is designed.The compact double-port polarization diversity antenna and four.port MIMO antenna are obtained by perpendicularly and orthogonally placing two broadband millimeter wave antennas onto the FR-4 dielectric substrate.The mutually orthogonal polarization mode is used to improve the isolation of adjacent ports.The semicircular annular and U-shaped slots are etched on the radiation patches of the two antenna elements respectively to meet the dual.band characteristic,and a rectangular slot is slotted on the ground.The HFSS simulation analysis results show that the designed antenna can operate at 28 GHz(24.5~29 GHz)and 39 GHz(36~47 GHz),has perfect radiation characteristic within working bands,and the isolation between adjacent ports can reach up to 30 dB.Four metal strips are loaded on the antenna as the director to improve the gain of the antenna.
作者
王利红
WANG Lihong(School of Physics and Electronics Science,Shanxi Datong University,Datong 037009,China)
出处
《现代电子技术》
北大核心
2019年第5期36-39,共4页
Modern Electronics Technique
基金
山西大同大学校级青年科研基金项目(2016Q5)~~
关键词
MIMO
双频
高隔离度
毫米波
高增益
极化分集
MIMO
dual.band
high isolation
millimeter wave
high gain
polarization diversity
