qfdtd90 to simulate CP patch antenna

Dear all,

Now Im going to design CP patch antenna by using a free software "qfdtd90". Does anyone use this software before? Can it use to simuate the axial ratio? as I read the manual & sample, it doesn't have any sample to simulate the result
of axial ratio!

How about if I ignore the axial ratio for CP?.... but i know its not good idea.....

Please help!

Hi, I'm also using qfdtd90 now. But I have not the user's manual. Would you please paste it here?
Thank you very much!