Abstract
This letter presents a scattered-field formulation for modeling dispersive media using the finite-difference time-domain (FDTD) method. Specifically, the auxiliary differential equation method is applied to Drude and Lorentz media for a scattered field FDTD model. The present technique can also be applied in a straightforward manner to Debye media. Excellent agreement is achieved between the FDTD-calculated and exact theoretical results for the reflection coefficient in half-space problems.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4-6 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2008 |
Funding
Manuscript received July 10, 2007; revised September 25, 2007. This work was supported in part by NIH Grant 5R01EB003682-03 (National Institute of Biomedical Imaging and Bioengineering) and by National Science Foundation Award 0522639 (NSF Biophotonics Program). S.-C. Kong is with the Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]). J. J. Simpson is with the Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131 USA. V. Backman is with the Department of Biomedical Engineering, North-western University, Evanston, IL 60208 USA. Digital Object Identifier 10.1109/LMWC.2007.911970
Keywords
- Auxiliary differential equation (ADE) method
- Dispersive media
- Finite-difference time-domain (FDTD) method
- Scattered-field
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering