antenna-theory.com

[slffea]

I spent the last half of 2009 writing FEA software to solve
waveguide problems along with electrostatics. I have just
completed it with help from this site, specifically the
math discussion:

http://www.antenna-theory.com/tutorial/waveguides/waveguides2.php

which was very good for generating benchmark data.
So thanks for making this site. You can get the software at:

http://slfcem.sourceforge.net/

If you're interested, you can use any of the images such as the
last 2 on the site:

http://slfcem.sourceforge.net/quad_dynam.html

which give some examples of the electric field arising from a rectangular
waveguide.

San Le
slffea.com