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3D FDTD codes in matlab

 
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Riyad



Joined: 19 Feb 2004
Posts: 17
Post19 Feb 2004 19:41   3D FDTD codes in matlab
Hi

I am actually trying to write some 3D FDTD codes in matlab concerning the evaluation of the performance of a PIFA antenna. Well I got stuck in writing the codes from scratch. Sad Can you please help me on where I could urgently find these codes on the net?
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boy



Joined: 30 Sep 2002
Posts: 558
Helped: 38
Post19 Feb 2004 23:32   Re: 3D FDTD codes in matlab
3D FDTD in matlab gonna run forever to get the results. you may need to write in C/Fortran.
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danielwood



Joined: 21 Dec 2001
Posts: 41
Helped: 9
Post19 Feb 2004 23:58   
If you want to find some FDTD codes, you can go to

[1]www.fdtd.org
[2]emlib.jpl.nasa.gov
[3]www.borg.umn.edu/toyfdtd/
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wang peng



Joined: 19 Feb 2004
Posts: 3
Post27 Feb 2004 17:42   Re: 3D FDTD codes in matlab
Hi,
Matlab though being a powerful tool .yet tis still hard to find numerical method code on it for the present time .
There is a 1-D sample code in the attachment . If it can help ...

Good courage .

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Rachel006



Joined: 27 Feb 2004
Posts: 1
Post27 Feb 2004 18:31   
i am learning FDTD now,but i find it is difficult to make mesh in a complex enviroment.
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maple



Joined: 27 Sep 2003
Posts: 104
Post29 Feb 2004 6:09   Re: 3D FDTD codes in matlab
A. Taflove's book(2nd edition) includes some wonderful FDTD codes in matlab, you can download it.
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midnite



Joined: 11 Dec 2002
Posts: 42
Post02 Mar 2004 17:32   Re: 3D FDTD codes in matlab
Hi,

in my experience if you use MATLAB to write your code it will result slower than a identical code for example in FORTRAN.

Midnite
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Element_115



Joined: 23 Mar 2002
Posts: 304
Helped: 20
Post02 Mar 2004 19:35   Re: 3D FDTD codes in matlab
Hi Riyad
Here are some 2D matlab files.
Hope they can help. You can go to Matlabs
File Exchange website, It has a lot of stuff.
http://w.\/\/.w.m(at)thworks.com/m(at)tlabcentral/fileexchange/loadCategory.do

Good luck.

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Riyad



Joined: 19 Feb 2004
Posts: 17
Post05 Mar 2004 10:49   Re: 3D FDTD codes in matlab
Thanx for your help!

My FDTD codes seem to work...
Now I need to obtain the input impedance and the VSWR in order to obtain the bandwidth of my antenna!
I seen that the input impedance may be calculated by fourier transform of the voltage and current. But how can this be done??? At what instant of time should I measure the voltage and current?
Thanking you in advance!
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