第36卷第5期2023年5月传感技术学报CHINESEJOURNALOFSENSORSANDACTUATORSVol.36No.5May2023项目来源:国家重点研发资助项目(2018YFC2001002)收稿日期:2022-04-25修改日期:2022-07-15ResearchonPermittivityMeasurementSensorBasedonSplit⁃RingResonatorStructure∗WANGKun1,2,ZHOUHongjun1∗,TANGHuajie2,JUZiheng2,NIEZedong2(1.CollegeofInformationScienceandEngineering,WuhanUniversityofScienceandTechnology,WuhanHubei430081,China;2.ShenzhenInstituteofAdvancedTechnology,ChinaAcademyofSciences,ShenzhenGuangdong518052,China)Abstract:Dual⁃portsensorsareoftenusedforthemeasurementofthepermittivityofsolidmaterials,butthesensorsizeislarge.Toad⁃dressthisproblem,asingle⁃portcharacteristicRFsensorwithasizeofonly30mm×40mmisdesigned.TheRFsensoradoptssplit⁃ringresonatorstructure,andFR4materialwiththepermittivityof4.4isselectedasthesensorsubstrate,thethicknessofwhichis1mm.Firstly,theelectronicdesignautomationsoftwaretheADSisusedtodesignthesensorandsimulatethesensorloadedwithdifferentdie⁃lectricconstantmodelstoobtainthereturnlossofS11withdifferentpermittivity.Su...