{"title":"Analysis of conformal antennas in spheroidal geometries: A mapping into planar components","authors":"A. Alú, F. Bilotti, L. Vegni","doi":"10.1109/ANTEM.2005.7852021","DOIUrl":null,"url":null,"abstract":"In this contribution, we apply the mapping between conformal antennas in complex geometries and planar equivalent antennas loaded with complex materials [F. Bilotti, A. Alù, L. Vegni, PIER 47, 1 (2004)] to the case of spherical and spheroidal geometries. Even though the complexity of the problem is not reduced after this rigorous mapping, a generalization of the Method of Lines (MoL) numerical algorithm can then be applied successfully. Starting from the generalized transmission-line equations that relate the transverse electromagnetic field components in a generic linear material embedded in a given orthogonal non-planar reference system, it is possible in fact to apply a 2-D discretization on the transverse plane, leading to a system of coupled differential equations for the line samples of the field. The theory and some numerical results are presented and discussed, showing the capabilities of this technique in terms of efficiency and accuracy, and underlining how a wise employment of non-conventional media may lead to interesting improvements of the radiating features of common microwave conformal antennas.","PeriodicalId":360668,"journal":{"name":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ANTEM.2005.7852021","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 this contribution, we apply the mapping between conformal antennas in complex geometries and planar equivalent antennas loaded with complex materials [F. Bilotti, A. Alù, L. Vegni, PIER 47, 1 (2004)] to the case of spherical and spheroidal geometries. Even though the complexity of the problem is not reduced after this rigorous mapping, a generalization of the Method of Lines (MoL) numerical algorithm can then be applied successfully. Starting from the generalized transmission-line equations that relate the transverse electromagnetic field components in a generic linear material embedded in a given orthogonal non-planar reference system, it is possible in fact to apply a 2-D discretization on the transverse plane, leading to a system of coupled differential equations for the line samples of the field. The theory and some numerical results are presented and discussed, showing the capabilities of this technique in terms of efficiency and accuracy, and underlining how a wise employment of non-conventional media may lead to interesting improvements of the radiating features of common microwave conformal antennas.
在这篇贡献中,我们应用了复杂几何形状的共形天线与加载复杂材料的平面等效天线之间的映射[F]。Bilotti, A. Alù, L. Vegni, PIER 47, 1(2004)]对球面和球面几何的情况。尽管在这种严格的映射之后,问题的复杂性并没有降低,但可以成功地应用线法(MoL)数值算法的推广。从广义的传输线方程出发,在给定的正交非平面参照系中嵌入的一般线性材料中的横向电磁场分量,实际上可以在横向平面上应用二维离散化,从而得到场的线样的耦合微分方程系统。本文提出并讨论了理论和一些数值结果,显示了该技术在效率和精度方面的能力,并强调了如何明智地使用非常规介质可能导致普通微波共形天线辐射特性的有趣改善。