Kisu Joo, Kyu Jae Lee, Hyun Jun Sung, Seung Jae Lee, Se Young Jeong, H. Park, Yoonhyun Kim
{"title":"Evaluation of package-level EMI shielding using conformally coated conductive and magnetic materials in low and high frequency ranges","authors":"Kisu Joo, Kyu Jae Lee, Hyun Jun Sung, Seung Jae Lee, Se Young Jeong, H. Park, Yoonhyun Kim","doi":"10.1109/ectc32862.2020.00107","DOIUrl":null,"url":null,"abstract":"The magnetic permeability and thickness of magnetic films and their effects on the EMI shielding effectiveness at 1 MHz were investigated. Various kinds of magnetic films having a thickness of 100μm~500μm and a permeability of 50μ~300μ were fabricated. 2D and 3D test vehicles were employed for measuring near-field EMI shielding effectiveness under magnetic source condition. By utilizing 2D and 3D test vehicles, the effects of various magnetic materials on the near-field EMI shielding effectiveness under H-field sources were studied at a low frequency of 1MHz. As a result, we found that the reduction rate of H-field SE is 8.57%, which is very similar to the total opening area of the four sides. the near H-field SE is affected as a logarithmic function of permeability and thickness equally","PeriodicalId":6722,"journal":{"name":"2020 IEEE 70th Electronic Components and Technology Conference (ECTC)","volume":"57 1","pages":"647-652"},"PeriodicalIF":0.0000,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE 70th Electronic Components and Technology Conference (ECTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ectc32862.2020.00107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The magnetic permeability and thickness of magnetic films and their effects on the EMI shielding effectiveness at 1 MHz were investigated. Various kinds of magnetic films having a thickness of 100μm~500μm and a permeability of 50μ~300μ were fabricated. 2D and 3D test vehicles were employed for measuring near-field EMI shielding effectiveness under magnetic source condition. By utilizing 2D and 3D test vehicles, the effects of various magnetic materials on the near-field EMI shielding effectiveness under H-field sources were studied at a low frequency of 1MHz. As a result, we found that the reduction rate of H-field SE is 8.57%, which is very similar to the total opening area of the four sides. the near H-field SE is affected as a logarithmic function of permeability and thickness equally
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
