Finite-difference time-___domain method: Difference between revisions

Revision as of 09:38, 25 October 2005

Revision as of 20:32, 15 November 2005

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FDTD finds the E/H fields directly everywhere in the computational ___domain. If the field values at some distance (like 10 meters away) are desired, it is likely that this distance will force the computational ___domain to be excessively large. Far field extensions are available for FDTD, but require some amount of post processing.

Since the simulation calulatescalculates the E and H fields at all points within the computational ___domain, it is best if the computational ___domain is finite. In many cases this is achieved by creating artificial boundaries into the simulation. Care must be taken to minimize errors introduced by such boundaries. There are a number of boundary conditions to chose from to simulate the effect of surrounding the computational ___domain with infinite free space.

Because FDTD is solved by propagating the fields forward