Problems with Ports and Meshing in HFSS

[Buqpa]

Hello!

I'm having big troubles with HFSS trying to simulate an Spiral antenna. I don't know how to assign a port to simulate an ideal excitation and the spiral is giving problems in the meshing operation

Can somebody helpme please?Thanks A Lot!

 

[faskdesk]

Could you give your screenshot of you design,
maybe I can give you someadvice,or else ,you
can read the HFSS user'guide , I remember in user's
guide demostrate some examples about antenna to
illustrate how to set waveport as an excitation to
drive antenna.