horn antenna+circular polarization

Hi,

I am an amateur antenna Design Engineer. Please guide me as i want to acheive circular polarization in case of conical horn antenna. Kindly guide with mentioning reference of text if possible.

Thanks.

You can use TM01 mode excitation.

Hi,

I highly appreciate your answer thanks for help, but kindly help me out how can i define modes in HFSS?

i.e.

TM01 mode.