Circularly polarized antenna and axial ratio

[shailja1310]

Hi everyone, i am working on circularly polarized antenna. Can anyone plzz give me an idea about the specifications of a circulalry polarized antenna. I mean how can i decide that the design is circularly polarized or not?? One is ofcorse Axial ratio. Bt i m unabe to find the plot between axial ratio vs frequency and i m looking for that. i am using CST 2010 tool. Can anyone would plz ans my ques??

 

[curiouscase]

I think its better to check the e field for polarization. As, polarization has to with the e field orientation like linear, circular etc.