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    • 7. 发明授权
    • Dual-band dichroic polarizer and system including same
    • 双频二向色偏振器及其系统
    • US09385436B2
    • 2016-07-05
    • US13945489
    • 2013-07-18
    • ThinKom Solutions, Inc.
    • William MilroyJames SorWilliam Henderson
    • H01Q15/24H01Q5/28
    • H01Q15/244H01Q5/28H01Q15/242
    • A dual-band dichroic polarizer is provided for converting linearly polarized electromagnetic energy within distinct frequency bands into oppositely polarized circularly polarized electromagnetic energy. The polarizer includes an array of unit cells distributed across a sheet, wherein the unit cells each include a stack of one or more resonant structures, the stack configured to introduce a phase differential of approximately +90° to linearly polarized electromagnetic energy within a first distinct frequency band that is incident upon and passes through the sheet, and configured to introduce a phase differential of approximately −90° to linearly polarized electromagnetic energy within a second distinct frequency band, separate from the first distinct frequency band, that is incident upon and passes through the sheet, a linear polarization of the electromagnetic energy in the first distinct frequency band and a linear polarization of the electromagnetic energy in the second distinct frequency band being the same.
    • 提供了一种双频带二向色偏振器,用于将不同频带内的线偏振电磁能转换为相反极化的圆偏振电磁能。 偏振器包括分布在片材上的单元电池阵列,其中单元电池每个包括一个或多个谐振结构的叠层,所述堆叠被配置成将线性极化电磁能的大约+ 90°的相位差引入第一不同的 频带,其入射并通过片材,并且被配置为在与第一不同频带分开的第二不同频带内引入大约-90°的线偏振电磁能的相位差,该第二不同频带与入射到并经过的第一不同频带 通过片材,第一不同频带中的电磁能量的线性极化和第二不同频带中的电磁能量的线性极化相同。