Abstract
Subgridding methods are often used to increase the efficiency of the wave propagation simulation with the Finite-Difference Time-Domain method. However, the majority of contemporary subgridding techniques have two important drawbacks: the difficulty in accommodating dispersive media and the inability for physical interfaces to cross the subgridding interface. This paper presents an extension of the frequency-dependent Huygens subgridding method from one dimension to three dimensions. Frequency dependency is implemented via the Auxiliary Differential Equation approach using the one-pole Debye relaxation model. Numerical experiments indicate that subgridding interfaces can be placed in various Debye media as well as across the physical interface. © 2012 IEEE.
Original language | English |
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Article number | 6230631 |
Pages (from-to) | 4336-4344 |
Number of pages | 8 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 60 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- Computational electromagnetics
- electromagnetic fields
- electromagnetic modeling
- finite difference methods
- multigrid methods
- numerical simulation