一种自解耦高隔离度6单元MIMO手机天线设计李明忠1，杨明2，洪炎1，王仲根1，穆伟东1（1.安徽理工大学电气与信息工程学院，安徽淮南232001；2.亳州学院电子信息工程系，安徽亳州236800）摘要：针对传统天线具有隔离度差、结构复杂等缺点，本文设计了一种新型6单元自解耦高隔离度的手机天线。天线系统由底面基板和两个侧面垂直小基板共同构成，其中，底面基板尺寸为150mm×75mm×0.8mm，垂直小基板尺寸为134mm×6mm×0.8mm，且每个侧面垂直基板上有3个T形辐射单元。仿真和实测结果显示，MIMO天线工作频段在端口S11小于-6dB阻抗带宽的条件下，可以覆盖3.3GHz～3.6GHz，同时，天线单元之间隔离度优于-20dB，辐射效率达到70%以上，包络相关系数（ECC）小于0.01。与传统天线相比，该天线具有自隔离、高隔离度、结构简单以及空间分集性极好等优点。关键词：5G；自解耦；隔离度；MIMO天线中图分类号：TN822文献标志码：A文章编号：1007-4260（2023）01-0053-05DesignofaSelf-DecouplingHighIsolation6-ElementMIMOMobilePhoneAntennaLIMingzhong1,YANGMing2,HONGYan1,WANGZhonggen1,MUWeidong1(1.SchoolofElectricalandInformationEngineering,AnhuiUniversityofScienceandTechnology,Huainan232001,China;2.DepartmentofElectronicsandInformationEngineering,BozhouUniversity,Bozhou236800,China)Abstract:Aimingatthedisadvantagesoftraditionalantennassuchaspoorisolationandcomplexstructure,anovel6-ele-mentself-decouplinghighisolationmobileantennaisdesigned.Theantennasystemconsistsofabottomsubstrateandtwosideverticalsmallsubstrates.Thesizeofthebottomsubstrateis150mm×75mm×0.8mm,andthesizeoftheverticalsub-strateis134mm×6mm×0.8mm.EachsideverticalsubstratehasthreeT-shapedradiationunits.Thesimulationandmea-surementresultsshowthattheworkingfrequencyofMIMO(Multi-InputMulti-Output)antennacancover3.3GHz～3.6GHzundertheconditionthattheportS11islessthan6dBimpedancebandwidth.Theisolationbetweenantennaunitsisbetterthan-20dB,andtheradiationefficiencycanreachmorethan70%,whiletheECC(EnvelopeCorrelationCoefficient)islessthan0.01.Comparedwiththetraditionalantenna,thisantennahastheadvantagesofself-isolation,highisolation,simplestructureandexcellentspatialdiversity.Keywords:5G;self-decoup...
