{"title":"Broadband Terahertz Linear-to-Circular Polarization Converter based on Metasurface","authors":"Congcong Shi, Yannan Jiang, J. Zhao","doi":"10.1109/ISAPE.2018.8634379","DOIUrl":null,"url":null,"abstract":"Effective manipulation of polarization of electromagnetic (EM) waves has drawn a lot of research interests in many fields, such as the terahertz (THz) technology. In this paper, a broadband linear-to-circular (LTC) polarization converter based on metasurface is proposed in THz frequency. The proposed converter consists of periodic unit cells which are formed by patterned metal strips, a dielectric layer, and a fully reflective gold mirror. In the frequency range of 0.536-1.270THz, the converter can convert linear polarization wave into circular polarization wave with the axis ratio less than 3dB. The simulated results indicate that the relative bandwidth reaches 81.28% and the efficiency is higher than 74%, thus, the broadband LTC polarization conversion has been realized.","PeriodicalId":297368,"journal":{"name":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAPE.2018.8634379","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
Effective manipulation of polarization of electromagnetic (EM) waves has drawn a lot of research interests in many fields, such as the terahertz (THz) technology. In this paper, a broadband linear-to-circular (LTC) polarization converter based on metasurface is proposed in THz frequency. The proposed converter consists of periodic unit cells which are formed by patterned metal strips, a dielectric layer, and a fully reflective gold mirror. In the frequency range of 0.536-1.270THz, the converter can convert linear polarization wave into circular polarization wave with the axis ratio less than 3dB. The simulated results indicate that the relative bandwidth reaches 81.28% and the efficiency is higher than 74%, thus, the broadband LTC polarization conversion has been realized.
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