{"title":"利用高阶边界条件对空间离散元曲面进行空间-频谱混合域分析","authors":"Jordan Dugan;Tom J. Smy;Shulabh Gupta","doi":"10.1109/TAP.2024.3476926","DOIUrl":null,"url":null,"abstract":"Higher-order boundary conditions are a useful tool for simplification of complex electromagnetic problems, such as spatially dispersive metasurfaces. A technique known as the extended generalized sheet transition conditions (GSTCs) method has recently been proposed that allows for the systematic simulation of spatially dispersive metasurfaces using higher-order boundary conditions. A general metasurface, in general, requires a boundary condition of infinite-order spatial derivatives to accurately model the surface, making them unsuitable for conventional full-wave modeling techniques where higher-order derivatives are computed numerically. Here, we propose a mixed spatial-spectral-domain representation of the boundary conditions that avoid the explicit computation of higher-order derivatives while still being in a form suitable for integration into standard numerical methods. We integrate these boundary conditions into an integral equation solver which is then successfully validated through several numerical examples.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9337-9346"},"PeriodicalIF":4.6000,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Mixed Spatial-Spectral Domain Analysis of Spatially Dispersive Metasurfaces Using Higher-Order Boundary Conditions\",\"authors\":\"Jordan Dugan;Tom J. Smy;Shulabh Gupta\",\"doi\":\"10.1109/TAP.2024.3476926\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Higher-order boundary conditions are a useful tool for simplification of complex electromagnetic problems, such as spatially dispersive metasurfaces. A technique known as the extended generalized sheet transition conditions (GSTCs) method has recently been proposed that allows for the systematic simulation of spatially dispersive metasurfaces using higher-order boundary conditions. A general metasurface, in general, requires a boundary condition of infinite-order spatial derivatives to accurately model the surface, making them unsuitable for conventional full-wave modeling techniques where higher-order derivatives are computed numerically. Here, we propose a mixed spatial-spectral-domain representation of the boundary conditions that avoid the explicit computation of higher-order derivatives while still being in a form suitable for integration into standard numerical methods. We integrate these boundary conditions into an integral equation solver which is then successfully validated through several numerical examples.\",\"PeriodicalId\":13102,\"journal\":{\"name\":\"IEEE Transactions on Antennas and Propagation\",\"volume\":\"72 12\",\"pages\":\"9337-9346\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2024-10-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Antennas and Propagation\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10719667/\",\"RegionNum\":1,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Antennas and Propagation","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10719667/","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Mixed Spatial-Spectral Domain Analysis of Spatially Dispersive Metasurfaces Using Higher-Order Boundary Conditions
Higher-order boundary conditions are a useful tool for simplification of complex electromagnetic problems, such as spatially dispersive metasurfaces. A technique known as the extended generalized sheet transition conditions (GSTCs) method has recently been proposed that allows for the systematic simulation of spatially dispersive metasurfaces using higher-order boundary conditions. A general metasurface, in general, requires a boundary condition of infinite-order spatial derivatives to accurately model the surface, making them unsuitable for conventional full-wave modeling techniques where higher-order derivatives are computed numerically. Here, we propose a mixed spatial-spectral-domain representation of the boundary conditions that avoid the explicit computation of higher-order derivatives while still being in a form suitable for integration into standard numerical methods. We integrate these boundary conditions into an integral equation solver which is then successfully validated through several numerical examples.
期刊介绍:
IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques