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%?????3-D?FDTD?code?with?UPML?absorbing?boundary?conditions
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%?????Program?author:?Keely?J.?Willis?Graduate?Student
%?????????????????????UW?Computational?Electromagnetics?Laboratory
%???????????????????????????Director:?Susan?C.?Hagness
%?????????????????????Department?of?Electrical?and?Computer?Engineering
%?????????????????????University?of?Wisconsin-Madison
%?????????????????????1415?Engineering?Drive
%?????????????????????Madison?WI?53706-1691
%?????????????????????kjwillis@wisc.edu
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%?????Copyright?2005
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%?????This?MATLAB?M-file?implements?the?finite-difference?time-domain
%?????solution?of?Maxwell‘s?curl?equations?over?a?three-dimensional
%?????Cartesian?space?lattice?comprised?of?uniform?cubic?grid?cells.
%?????
%?????The?dimensions?of?the?computational?domain?are?8.2?cm
%?????（x-direction）?3.4?cm?（y-directio