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FDTD coding for periodic structures

 
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mherndon



Joined: 27 Dec 2004
Posts: 5
Post05 Sep 2007 9:21   FDTD coding for periodic structures
When using the TFSF method the scatterer needs to be contained in the total field region. This is unrealistic since most periodic structures contain a dielectric layer which needs to extend beyond the TFSF boundary (as a unit cell).

I can probably simplify my life by just doing away with the TFSF method but that leaves me with a problem of injecting a plane wave. Any ways of injecting a plane wave without using the TFSF method?

Any comments or Ideas?


BTW Taflove's book is great but in the periodic section does not talk about using TFSF method with periodic structures with dielectric layers.

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iyami



Joined: 12 Apr 2008
Posts: 6
Post12 Apr 2008 15:02   Re: FDTD coding for periodic structures
have a look at

Quote:
# K. Abdijalilov and J. B. Schneider, ``Analytic Field Propagation TFSF Boundary for FDTD Problems Involving Planar Interfaces: Lossy Material, Evanescent Fields,'' IEEE Antennas and Wireless Propagat. Lett. vol. 5, pp. 454--458, 2006. (1.4 MB PDF file.)


from

Quote:
http://www.eecs.wsu.edu/~schneidj/journal.html


It discusses material interfaces and the TFSF. It is unfortunately not as simple as the standard TFSF box in vacuum
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wagina



Joined: 23 May 2007
Posts: 2
Post02 Jun 2008 3:47   FDTD coding for periodic structures
thanx！
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