Program 9A, 9B 1D FDTD with Handling of Material Properties - Different Permittivities

1D FDTD showing how to model difference in permittivities and what to observe

Youtube Links :- http://www.youtube.com/watch?v=pgiFFeEPH1E
http://www.youtube.com/watch?v=ISbxU9Was5w

Written for Course :-
Computational Electromagnetics, Fall 2011
Department of Electrical Engineering
Indian Institute of Technology Madras (IITM)
Chennai - 600036, India

Authors :-
Sathya Swaroop Ganta, B.Tech., M.Tech. Electrical Engg.
Kayatri, M.S. Engineering Design
Pankaj, M.S. Electrical Engg.
Sumantra Chaudhuri, M.S. Electrical Engg.
Projesh Basu, M.S. Electrical Engg.
Nikhil Kumar CS, M.S. Electrical Engg.

Instructor :-
Dr. Ananth Krishnan
Assistant Professor
Department of Electrical Engineering
Indian Institute of Technology Madras
http://www.ee.iitm.ac.in/~ananthk

Description :-

In the current 1D FDTD simulation, to the left half is Air/Vacuum (Epsilonr=1)and the right half is a Material (Epsilonr=4). So the wavelength of sinusoidal signal, pulse width and propagation velocity of the Gaussian Pulse changes in the left and right hand sides of the simulation domain, due to the difference in permittivities which translates to change in refractive index. Objective of the program is to solve for the Maxwell's equation for an x-directed z-polarized TEM wave containing the y-directed magnetic field Hy and z-directed electric field Ez, using 1D FDTD with effects of permittivity modeled.