An Expedient Approach to FDTD-Based Modeling of Finite Periodic Structures
- 8 January 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 69 (2), 1192-1204
- https://doi.org/10.1109/tmtt.2020.3045729
Abstract
This article proposes an efficient finite-difference time-domain (FDTD) technique for determining electromagnetic fields interacting with a finite-sized 2-D and 3-D periodic structures. The technique combines periodic boundary conditions-modeling fields away from the edges of the structure-with independent simulations of fields near the edges of the structure. It is shown that this algorithm efficiently determines the size of a periodic structure necessary for fields to converge to the infinitely periodic case. Numerical validations of the technique illustrate the savings concomitant with the algorithm.Keywords
Funding Information
- Natural Sciences and Engineering Research Council of Canada through a Discovery ((RGPIN-2018-04650))
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