I need help in FEKO. I want to design an Archimedean Spiral antenna in FEKO,

I need to design an Archimedean spiral antenna in FEKO and does not know How to do that. Later I also would like to extend Spiral arm to meet another spiral arm. Can Please somebody help me with it, how can i create spiral in Feko?
Thanks In Advance.

Watch this tutorial it may can help you.www.youtube.com/watch?v=iWJ41Tiruzc

https://www.feko.info/applications/w...spiral-antenna