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    • 10. 发明授权
    • Low index metamaterial
    • 低指数超材料
    • US08466370B2
    • 2013-06-18
    • US12564847
    • 2009-09-22
    • Erik Lier
    • Erik Lier
    • H05K1/00
    • H01Q15/0073H01Q13/02H01Q13/0275H01Q15/0086
    • Various aspects of the disclosure provide low index metamaterials. The low index metamaterials may be used to form soft and/or hard electromagnetic (EM) boundaries to facilitate desired EM performance or propagation in applications including feed horns, spatial feed/combiners, isolation barriers between antennas or RF modules, and reduced radar cross-section applications. In one aspect, a low index metamaterial comprises a dielectric layer and a plurality of conductors on a surface of the dielectric layer, embedded in the dielectric layer or both, wherein the low index metamaterial appears as a medium having a dielectric constant less than one with respect to electromagnetic waves at predetermined frequencies and propagating at grazing angles with respect to a surface of the low index metamaterial.
    • 本公开的各个方面提供了低指数超材料。 低指数超材料可用于形成软和/或硬电磁(EM)边界,以便在包括馈电喇叭,空间进给/组合器,天线或RF模块之间的隔离屏障以及降低的雷达交叉点的应用中促进期望的EM性能或传播, 截面应用。 在一个方面,低折射率超材料包括电介质层和介电层表面上的多个导体,嵌入介电层或二者中,其中低折射率超材料表现为介电常数小于1的介质, 相对于低折射率超材料的表面以预定频率的电磁波传播,并以放射角传播。