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[SOLVED] what is error of this 3D FDTD matlab code?

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ghasem_008

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hi friends.
I wrote a 3D FDTD matlab code in cartesian coordinates with first order Mur ABC.
but I don't konw why my Fields become very big (in order of 1e20!!!).
can anyone find it's reason and find my error?
I don't konw how import a current source to bottom surface of my antenna.
my antenna is dielectric with high negative permitivity such as -100).
My Courant limit satisfied and mesh is regular.
I attach my code.please help me.
where I mistake?
View attachment my code.txt
 
Last edited:

hi ghasem
for a courent source you should study this thesis
it's useful
 

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  • phd thesis.pdf
    2.4 MB · Views: 135

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