第29卷第1期2024年1月doi:10.13682/j.issn.2095-6533.2024.01.007一种基于扼流结构的基站天线碗状振子异频去耦方法西安邮电大学学报JOURNALOFXI'ANUNIVERSITYOFPOSTSANDTELECOMMUNICATIONSVol.29No.1Jan.2024魏庚明，王艺磊，贺怡，杨林（西安电子科技大学电子工程学院，陕西西安710071)摘要：针对双频嵌人式布局的基站天线中存在高频振子辐射性能受低频振子严重干扰的问题，提出一种基于流结构的基站天线碗状振子异频去耦方法。设计了含去耦结构的基站天线，在低频振子臂上加载微带形式的扼流结构，通过分析扼流结构的等效电路、在高频天线工作频段的感应电流及单站雷达散射截面（RadarCross-Section，RCS)，调整流结构的性能参数，有效降低低频振子对高频振子的影响。通过设计具有去耦功能的双频双极化基站天线阵列，验证所提方法的可行性。结果表明，低频振子具有良好的阻抗匹配特性，所提方法能有效减弱高频振子受低频振子影响导致的交叉极化恶化问题，且能够稳定方向图波束宽度。关键词：基站天线；碗状振子单元；流结构；雷达散射截面；异频解耦；嵌人式布局中图分类号：TN820;0442Across-banddecouplingmethodforbowl-shapeddipolesofbase文献标识码：Astationantennabasedonchokestructure文章编号：2095-6533（2024)01-0064-07WEIGengming,WANGYilei,HEYi,YANGLin(SchoolofElectronicEngineering,XidianUniversity,Xi'an710071,China)Abstract:Toaddresstheissueofsignificantinterferencefromlow-frequencydipolesontheradia-tionperformanceofhigh-frequencydipoleswithindual-bandembeddedlayoutbasestationanten-nas,across-banddecouplingmethodbasedonchokestructureforbowl-shapeddipolesofbasesta-tionantennaisproposed.Abasestationantennawithadecouplingstructureisdesigned,incorpora-tingamicrostripchokestructureonthearmsofthelow-frequencydipole.Byanalyzingtheequiva-lentcircuitofthechokestructure,theinducedcurrentattheworkingfrequencybandofthehigh-frequencyantenna,andtheradarcross-section(RCS),theperformanceparametersofthechokestructureareadjustedtoeffectivelyminimizetheimpactofthelow-frequencydipoleonthehigh-fre-quencydipole.Toverifythefeasibilityoftheproposedmethod,thedesigneddual-banddual-polar-izedbasestationantennaarraywithdecouplingcapabilityistested.Theresultsshowthatth...
