Ansys Employee

Hi Yank4,

If you navigate to HFSS>>Fields>>Edit Sources, you will see the two modes (TE, TM) listed in the Floquet Port as mode 1 and mode 2. Like in the below screen-shot, you will see in the first two rows that Floquet Port 1 has :1 and :2 for the two modes. 

You should be able to produce a circularly polarized excitation as a result by adding 90deg phase to one of the modes.