Antennas: Application Specific Modeling Guide
You can access the antennamdgd.pdf under the installation directory: .../AnsysEM/v242/[Win64 or Linux64]/Help/HFSS.
This Application Specific Modeling Guide is written for Ansys Electronics Desktop beginners as well as experienced users who are using HFSS for the first time. This brief manual provides guidelines for modeling antennas in HFSS.