Finite difference time domain modeling of finite-sized electromagnetic source over periodic structure via a plane wave spectral expansion approach
Article first published online: 15 SEP 2010
Copyright 2010 by the American Geophysical Union.
Volume 45, Issue 5, October 2010
How to Cite
2010), Finite difference time domain modeling of finite-sized electromagnetic source over periodic structure via a plane wave spectral expansion approach, Radio Sci., 45, RS5003, doi:10.1029/2009RS004284., , and (
- Issue published online: 15 SEP 2010
- Article first published online: 15 SEP 2010
- Manuscript Accepted: 25 MAY 2010
- Manuscript Revised: 2 FEB 2010
- Manuscript Received: 10 SEP 2009
- periodic structure;
- spectral expansion
 A novel three-dimensional time domain method is developed to study interactions between finite-sized electromagnetic sources and infinite periodic structures. The method is based on a periodic finite difference time domain method combined with the spectral expansion of electromagnetic sources. Using this method, only a single periodic cell needs to be modeled in finite difference time domain simulations. The convergence, guidelines on using the algorithm, and the acceleration scheme for the algorithm are discussed. Several periodic structures are simulated by this proposed method. It is shown that this method can significantly reduce the required computer memory and computational time.