Abstract
In this paper, an accurate finite-difference time-domain (FDTD) scheme for modeling the electromagnetic pulse propagation in arbitrary dispersive media is presented. The main mathematical drawbacks encountered while solving this class of problems by means of the FDTD technique is the approximation of the fractional derivatives appearing in the time-domain permittivity response pertaining such materials. In order to overcome this issue, the proposed scheme solves the Maxwell's equations directly in the time-domain by using the Riemann-Liouville fractional derivative operator. The feasibility of the proposed method is demonstrated by simulating the ultra-wideband wave propagation in general stratified Raicu dispersive media displaying multiple relaxation times response.
Original language | English |
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Title of host publication | Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015 |
Place of Publication | Piscataway |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 460-463 |
Number of pages | 4 |
ISBN (Electronic) | 978-1-4799-7806-9 |
ISBN (Print) | 978-1-4799-7805-2 |
DOIs | |
Publication status | Published - 12 Oct 2015 |
Event | 17th International Conference on Electromagnetics in Advanced Applications, ICEAA 2015 - "Centro Congressi Torino Incontra", Torino, Italy Duration: 7 Sep 2015 → 11 Sep 2015 Conference number: 17 |
Conference
Conference | 17th International Conference on Electromagnetics in Advanced Applications, ICEAA 2015 |
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Abbreviated title | ICEAA 2015 |
Country | Italy |
City | Torino |
Period | 7/09/15 → 11/09/15 |
Other |
Keywords
- Breast
- Cancer
- Dispersion
- Finite difference methods
- Media
- Permittivity
- Time-domain analysis