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A simple and efficient FDTD/PBC algorithm for scattering analysis of periodic structures
Author(s) -
Yang Fan,
Chen Ji,
Qiang Rui,
Elsherbeni Atef
Publication year - 2007
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2006rs003526
Subject(s) - finite difference time domain method , simple (philosophy) , reflection (computer programming) , perfectly matched layer , plane wave , scattering , algorithm , mathematics , plane (geometry) , optics , dielectric , mathematical analysis , computer science , physics , geometry , philosophy , optoelectronics , epistemology , programming language
An efficient finite difference time domain (FDTD) algorithm with a simple periodic boundary condition (PBC) is developed to analyze reflection and transmission properties of general periodic structures with arbitrary incident angles. In this new approach, the FDTD simulation is performed by setting a constant horizontal wave number instead of a specific incident angle. The principle of the FDTD/PBC algorithm is discussed and two important implementation issues are addressed, namely, the excitation of plane wave and the suppression of horizontal resonance. The validity of the approach is demonstrated through several numerical examples on dielectric slabs and frequency selective surfaces.