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sample writing document - The ASMFDTD method for analyzing...

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The ASM-FDTD method for analyzing two- dimensional EBG and plasmonic waveguides   R. Qiang* (1) , J. Chen (1) , F. Capolino (2) , D. R. Jackson (1) , and D. R. Wilton (1) Department of Electrical and Computer Engineering University of Houston, Houston TX 77204, USA E-mail: rqiang@mail.uh.edu (2) Department of Information Engineering University of Siena, 53100 Siena, Italy Abstract The array scanning method (ASM) is combined with the FDTD technique to obtain a method called ASM-FDTD for analyzing two-dimensional (2D) or three-dimensional (3D) periodic problems consisting of a time-varying line source or dipole source in the presence of a 2D or 3D infinite periodic structure, respectively. In the 2D case the structure is invariant in one dimension, of finite extent in the second dimension, and infinite and periodic in the third dimension. In the 3D case the periodic structure is infinite and periodic in two dimensions and finite in the third. The method only requires the numerical modeling of a single unit cell, and is applicable to the modeling of EBG structures, metamaterials, and periodic plasmonic structures. 1. Introduction The finite-difference time-domain method (FDTD) has been successfully used to analyze electromagnetic behaviors of many infinite periodic structures including metamaterials. To improve its computational efficiency, many different implementations of the periodic
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sample writing document - The ASMFDTD method for analyzing...

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