Application of the symplectic finite-difference time-domain scheme to electromagnetic simulation

Journal Article · Sun Jul 01 00:00:00 EDT 2007 · Journal of Computational Physics

DOI:https://doi.org/10.1016/j.jcp.2006.11.027· OSTI ID:20991594

Sha, Wei ^[1]; Huang, Zhixiang ^[1]; Wu, Xianliang ^[1]; Chen, Mingsheng ^[1]

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1. Key Laboratory of Intelligent Computing and Signal Processing, Anhui University, Hefei 230039 (China)

An explicit fourth-order finite-difference time-domain (FDTD) scheme using the symplectic integrator is applied to electromagnetic simulation. A feasible numerical implementation of the symplectic FDTD (SFDTD) scheme is specified. In particular, new strategies for the air-dielectric interface treatment and the near-to-far-field (NFF) transformation are presented. By using the SFDTD scheme, both the radiation and the scattering of three-dimensional objects are computed. Furthermore, the energy-conserving characteristic hold for the SFDTD scheme is verified under long-term simulation. Numerical results suggest that the SFDTD scheme is more efficient than the traditional FDTD method and other high-order methods, and can save computational resources.

• OSTI ID: 20991594
• Journal Information: Journal of Computational Physics, Vol. 225, Issue 1; Other Information: DOI: 10.1016/j.jcp.2006.11.027; PII: S0021-9991(06)00575-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9991
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
DIELECTRIC MATERIALS
ENERGY CONSERVATION
FINITE DIFFERENCE METHOD
IMPLEMENTATION
SCATTERING
THREE-DIMENSIONAL CALCULATIONS
TRANSFORMATIONS