Method of Image Green's Function in Grating Theory: Extinction Error Field
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概要
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This paper deals with an integral equation method for analyzing the diffraction of a transverse magnetic (TM) plane wave by a perfectly conductive periodic surface. In the region below the periodic surface, the extinction theorem holds, and the total field vanishes if the field solution is determined exactly. For an approximate solution, the extinction theorem does not hold but an extinction error field appears. By use of an image Green's function, new formulae are given for the extinction error field and the mean square extinction error (MSEE), which may be useful as a validity criterion. Numerical examples are given to demonstrate that the formulae work practically even at a critical angle of incidence.
著者
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Nakayama Junichi
Kyoto Inst. Of Technol.
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Tamura Yasuhiko
Graduate School Of Engineering And Design Kyoto Inst. Of Technol.
関連論文
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- Method of Image Green's Function in Grating Theory: Extinction Error Field
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- Shadow Theory of Diffraction Grating: Reciprocity, Symmetry and Average Filter
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