{"title":"基于空间坐标变换的超定向天线设计","authors":"P. Tichit, S. Burokur, A. Lustrac","doi":"10.1109/IWAT.2009.4906905","DOIUrl":null,"url":null,"abstract":"Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform a dipole source radiating isotropically to an ultra-directive antenna. We show how its directivity is enhanced when the wavelength is sufficiently small compared to the width of the metamaterial. Numerical simulations using Comsol Multiphysics are performed to illustrate these properties.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"57 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design of an ultra-directive antenna using spatial coordinate transformation\",\"authors\":\"P. Tichit, S. Burokur, A. Lustrac\",\"doi\":\"10.1109/IWAT.2009.4906905\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform a dipole source radiating isotropically to an ultra-directive antenna. We show how its directivity is enhanced when the wavelength is sufficiently small compared to the width of the metamaterial. Numerical simulations using Comsol Multiphysics are performed to illustrate these properties.\",\"PeriodicalId\":166472,\"journal\":{\"name\":\"2009 IEEE International Workshop on Antenna Technology\",\"volume\":\"57 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-03-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2009 IEEE International Workshop on Antenna Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IWAT.2009.4906905\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 IEEE International Workshop on Antenna Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IWAT.2009.4906905","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Design of an ultra-directive antenna using spatial coordinate transformation
Spatial coordinate transformation is used as a reliable tool to control electromagnetic fields. In this paper, we derive the permeability and permittivity tensors of a metamaterial able to transform a dipole source radiating isotropically to an ultra-directive antenna. We show how its directivity is enhanced when the wavelength is sufficiently small compared to the width of the metamaterial. Numerical simulations using Comsol Multiphysics are performed to illustrate these properties.
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