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    • 3. 发明授权
    • Simulating two-dimensional periodic patterns using compressed fourier space
    • 使用压缩傅立叶空间模拟二维周期模式
    • US08170838B2
    • 2012-05-01
    • US12430805
    • 2009-04-27
    • Silvio J. RabelloWilliam A. McGahanJie Li
    • Silvio J. RabelloWilliam A. McGahanJie Li
    • H03F1/26G06F15/00
    • G06F17/5018
    • The process of modeling a complex two-dimensional periodic structure is improved by selectively truncating the Fourier expansion used in the calculation of resulting scatter signature from the model. The Fourier expansion is selectively truncated by determining the contribution for each harmonic order in the Fourier transform of the permittivity function and retaining the harmonic orders with a contribution that is above a threshold. The Fourier space may be compressed so that only the selected harmonic orders are used, thereby reducing the required memory and calculation times. The compressed Fourier space may be used in a real-time analysis of a sample or to generate a library that is used in the analysis of a sample.
    • 通过选择性地截断从模型计算得到的散射特征中使用的傅立叶展开,改善了对复杂二维周期结构进行建模的过程。 通过确定介电常数函数的傅立叶变换中的每个谐波阶数的贡献并且保持具有高于阈值的贡献的谐波阶数来选择性地截断傅里叶展开。 可以压缩傅里叶空间,使得仅使用所选择的谐波阶数,从而减少所需的存储和计算时间。 压缩的傅立叶空间可以用于样本的实时分析或生成用于样本分析的文库。
    • 4. 发明申请
    • Simulating Two-Dimensional Periodic Patterns Using Compressed Fourier Space
    • 使用压缩傅立叶空间模拟二维周期模式
    • US20100274521A1
    • 2010-10-28
    • US12430805
    • 2009-04-27
    • Silvio J. RabelloWilliam A. McGahanJie Li
    • Silvio J. RabelloWilliam A. McGahanJie Li
    • G06F15/00
    • G06F17/5018
    • The process of modeling a complex two-dimensional periodic structure is improved by selectively truncating the Fourier expansion used in the calculation of resulting scatter signature from the model. The Fourier expansion is selectively truncated by determining the contribution for each harmonic order in the Fourier transform of the permittivity function and retaining the harmonic orders with a contribution that is above a threshold. The Fourier space may be compressed so that only the selected harmonic orders are used, thereby reducing the required memory and calculation times. The compressed Fourier space may be used in a real-time analysis of a sample or to generate a library that is used in the analysis of a sample.
    • 通过选择性地截断从模型计算得到的散射特征中使用的傅立叶展开,改善了对复杂二维周期结构进行建模的过程。 通过确定介电常数函数的傅立叶变换中的每个谐波阶数的贡献并且保持具有高于阈值的贡献的谐波阶数来选择性地截断傅里叶展开。 可以压缩傅里叶空间,使得仅使用所选择的谐波阶数,从而减少所需的存储和计算时间。 压缩的傅立叶空间可以用于样本的实时分析或生成用于样本分析的文库。