{"title":"3-D Printed Dual-Band Microwave Absorber based on Perforated Geometry","authors":"Bhukya Shiridinath, Saptarshi Ghosh","doi":"10.1109/IMaRC49196.2021.9714528","DOIUrl":null,"url":null,"abstract":"In this paper, a three dimensional (3-D) printed dual-band microwave absorber is presented. The proposed geometry is designed on a perforated dielectric substrate to reduce the overall volume as well as weight of the device. Lowcost Polylactic acid (PLA) material is used in 3-D printing technology to realize the perforated structure, on top of which a conductive ink is deposited in annular ring patterns. The proposed structure exhibits two discrete absorption peaks at 6.86 GHz and 11.26 GHz with corresponding absorptivities of 98.42% and 99.92%. In addition, the topology is angularly stable as well as polarization-insensitive. Parametric variations and surface current distributions are also studied to investigate the operating principle of the proposed 3-D printed absorber.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMaRC49196.2021.9714528","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
In this paper, a three dimensional (3-D) printed dual-band microwave absorber is presented. The proposed geometry is designed on a perforated dielectric substrate to reduce the overall volume as well as weight of the device. Lowcost Polylactic acid (PLA) material is used in 3-D printing technology to realize the perforated structure, on top of which a conductive ink is deposited in annular ring patterns. The proposed structure exhibits two discrete absorption peaks at 6.86 GHz and 11.26 GHz with corresponding absorptivities of 98.42% and 99.92%. In addition, the topology is angularly stable as well as polarization-insensitive. Parametric variations and surface current distributions are also studied to investigate the operating principle of the proposed 3-D printed absorber.
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