{"title":"Loading an Active Frequency Selective Surface in Microwave Cavities to Enhance Heating Uniformity","authors":"Wei Xiao;Xinyue Gao;Yawen Wang","doi":"10.1109/LMWT.2025.3588842","DOIUrl":null,"url":null,"abstract":"This letter introduces an effective method to enhance microwave heating uniformity by equipping an active frequency selective surface (AFSS) working at 2.45 GHz within microwave cavities. By changing the <sc>on</small>/<sc>off</small> states of p-i-n diodes embedded at different locations on the AFSS, the proposed method achieves the redistribution of the electric field in the microwave cavity. Simulations demonstrate an increase of over 36% in heating uniformity across different heated samples through diode state control. To validate this method, a microwave heating system is customized to conduct temperature measurements. Good agreement is achieved between simulations and experiments, verifying the validity of this method.","PeriodicalId":73297,"journal":{"name":"IEEE microwave and wireless technology letters","volume":"35 10","pages":"1642-1645"},"PeriodicalIF":3.4000,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE microwave and wireless technology letters","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/11084954/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This letter introduces an effective method to enhance microwave heating uniformity by equipping an active frequency selective surface (AFSS) working at 2.45 GHz within microwave cavities. By changing the on/off states of p-i-n diodes embedded at different locations on the AFSS, the proposed method achieves the redistribution of the electric field in the microwave cavity. Simulations demonstrate an increase of over 36% in heating uniformity across different heated samples through diode state control. To validate this method, a microwave heating system is customized to conduct temperature measurements. Good agreement is achieved between simulations and experiments, verifying the validity of this method.