{"title":"Wideband Ultra-Thin Polarization Insensitive Flower shaped Absorber","authors":"Archana Kumari, S. Kalraiya, R. Chaudhary","doi":"10.1109/imarc49196.2021.9714535","DOIUrl":null,"url":null,"abstract":"A compact ultrathin wideband, wide incidence angle, nearly perfect metamaterial absorber has been proposed in this paper. The unit cell consists of a simple flower shaped resonator with a circular patch and four chip resistors. Under normal incidence, it has absorptivity greater than 90% from 5.55 GHz to 15.39 GHz. While, when the incidence angle is oblique it can achieve absorptivity greater than 80% up to 45° for both TE and TM mode waves. The unit cell electrical area and thickness are $0.22 \\lambda_{L} \\times 0.22 \\lambda_{L}$ and $0.11 \\lambda_{L}$ where, $\\lambda_{L}$ is the lowest absorption frequency wavelength. Input impedance and field distribution have been discussed to analyze the absorption mechanism.","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/imarc49196.2021.9714535","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
A compact ultrathin wideband, wide incidence angle, nearly perfect metamaterial absorber has been proposed in this paper. The unit cell consists of a simple flower shaped resonator with a circular patch and four chip resistors. Under normal incidence, it has absorptivity greater than 90% from 5.55 GHz to 15.39 GHz. While, when the incidence angle is oblique it can achieve absorptivity greater than 80% up to 45° for both TE and TM mode waves. The unit cell electrical area and thickness are $0.22 \lambda_{L} \times 0.22 \lambda_{L}$ and $0.11 \lambda_{L}$ where, $\lambda_{L}$ is the lowest absorption frequency wavelength. Input impedance and field distribution have been discussed to analyze the absorption mechanism.