Motohiro Negishi, T. Shibata, Xinrong Li, N. Suzuki
{"title":"Verification of Compartmental Electromagnetic Interference Shielding Effect with imprint-Through Mold Via (i-TMV) for RF modules","authors":"Motohiro Negishi, T. Shibata, Xinrong Li, N. Suzuki","doi":"10.4071/1085-8024-2021.1.000303","DOIUrl":null,"url":null,"abstract":"\n In order to form a compartmental EMI shielding structure for radio frequency (RF) modules, we have proposed the new process named ”imprint-Through Mold Via (i-TMV)”, which could be fabricated by imprinting with a silicon master and filling with conductive paste. In this work, a test coupon was fabricated and EMI shielding effect of the i-TMV was actually evaluated by measurement of the electric field strength that leaked through from via array. As a result, it was found that the shielding effect was 23.6 dB at 4 GHz, which was close to the completely shielded value with a metal cap (25.6 dB). This result indicated that the i-TMV was significantly effective as a compartmental EMI shielding for the Sub-6 band application.","PeriodicalId":14363,"journal":{"name":"International Symposium on Microelectronics","volume":"7 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Symposium on Microelectronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4071/1085-8024-2021.1.000303","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In order to form a compartmental EMI shielding structure for radio frequency (RF) modules, we have proposed the new process named ”imprint-Through Mold Via (i-TMV)”, which could be fabricated by imprinting with a silicon master and filling with conductive paste. In this work, a test coupon was fabricated and EMI shielding effect of the i-TMV was actually evaluated by measurement of the electric field strength that leaked through from via array. As a result, it was found that the shielding effect was 23.6 dB at 4 GHz, which was close to the completely shielded value with a metal cap (25.6 dB). This result indicated that the i-TMV was significantly effective as a compartmental EMI shielding for the Sub-6 band application.